An ice skater with rotational inertia I is spinning with angular speed w. She pulls her arms in, and thereby increasing her angular speed to 4w. What is her rotational inertia then? O 1/4 O 1/2 O 21 O 41

An ice skater with rotational inertia I is spinning with angular speed w. She pulls her arms in, and thereby increasing her angular speed to 4w. What is her rotational inertia then? O 1/4 O 1/2 O 21 O 41

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 9P

See similar textbooks

Related questions

Q: You drop a 2.20 kg book to a friend who stands on the ground at distance D = 11.0 m below. If your f...

A: As per our company guidelines we are supposed to answer ?️only first 3 sub-parts. Kindly repost othe...

Q: A silver and a copper voltameter are connected in series with a 12.0 volt battery of negligible inte...

Q: 3. Consider these 2 point charges separated 0.2 m. There are points somewhere along the line passing...

A: Given, Two point charges separated by a distance r = 0.2 m point charges having magnitude, q1 = 3 μ...

Q: 2. A ball is kicked lby lo m/s at an player with an initial velcity of a angle of 30 degrees. Detemi...

Q: A stationary horizontal disc is free to rotate about its axis. When a torque is applied on it, its k...

Q: 10. Consider a 1100 W, 120 V megatoasterM that perfectly toasts bread every time. a) What is its res...

Q: The mathematical model for a wave on a tightly stretched wire is y(x, t) = 0.340 sin 12xt Злх + 4 wh...

A: Given: y(x,t) = 0.340 sin (12πt -3πx + π/4)μ=86.0 g/m

Q: The wave function of a mechanical wave on a string is described by: y(x.t) = 0.015cos(2rtx-50rtt + r...

Q: The length of a rod as measured in an experiment is found to be 2.48 m, 2.46 m, 2.49 m, 2.49 m and 2...

Q: 9. Consider a wire with two sections of different diameters. 1o 2 a) Is I1 less than, greater than, ...

Q: 3. Erin has 95 minutes to complete a test at school. The test starts at 1:59 PM and Susan has volley...

A: The exam starts at 1:59 PM Erin has 95 mins to complete the test so Erin has completed the test at...

Q: 5. Consider the circuit shown below, with four different resistors. B3 C If the electric potential a...

Q: The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.3 mm and is 8....

A: Given: The inner radius of the pulmonary artery: R = 2.3 mm (2.3 x 10-3 m); The length of the pulmo...

Q: B) Two objects of the same mass have velocities illustrated by the vectors below. They collide and s...

Q: A guitar string is 128 cm long and has a mass of 2 g. Knowing that the wave speed in the string is 4...

A: we know speed of wave in a string v = Tμ where T = tension on string μ= mass per unit length of str...

Q: Frid ttie Feurer traucfrm XC10) for the Pulse f the Sapnal destribed bekw: -2, -3ms <tso 12, X(4) %3...

A: According to our guideline we have to do one question.Pls upload other separately.Hope you understan...

Q: An train starting from rest speeds up to 47. ft per sec with a constant acceleration of 3.862 ft/s, ...

A: Area bounded by velocity time graph represents displacement. Slope under velocity time graph represe...

Q: An ideal spring of negligible mass with force constant of 400 N/m is placed on a frictionless horizo...

Q: A hole of area 1 mm opens near the bottom of a large-water storage tank, and a stream of water shoot...

Q: March 31, 2022 at 10:19 AM 1. An unknown alloy is subjected to an electric field of 25 V/m, and has ...

A: Answer:- Given Electric field (E) = 25 V/m Current density (J) = 1.45 × 109 A/m2 Resistivity (p)...

Q: Performed the following as directed. Show your complete solution 1. A bullet travels a distance of ...

A: A quantity can be written as = a ± Δa

Q: For a thin converging lens of focal length f producing a real image where s and s' are the object an...

Q: A0.20-kg object is attached to a spring is undergoing simple harmonic motion. The spring has spring ...

Q: Two 4 uC point charges blocks are 1-m apart at coordinate (x, y) = (0m,0m) and (1 m, 0 m) respective...

A: Electric field due to a point charge at any point is given by Kq/r2 and the direction is a line join...

Q: Part A A resistor with resistance R and a capacitor with capacitance C are connected in series to an...

Q: Figure 2 is a schematic of a pumped-storage system. How much power must be supplied to the water by ...

A: Consider the given data as below. Flow rate, Q=0.085 m3s The elevation of the upper reservoir, z1=42...

Q: Summarize what happens to momentum and kinetic energy in a 100% elastic collision. That is, compare ...

A: In 100% elastic collision Linear momentum and Total Kinetic energy remains conserved, i.e. Linear mo...

Q: 9. A train pulls out of a station along track a straight horizontal with five identical freight cars...

Q: 2. For each of the mirrors first draw in the normal. Then measure and write in the angle of incidenc...

A: For plane mirror Angle of incidence = Angle of reflection

Q: A 76-kg tourist starts from rest at the top of a 12.0 m long water slide that is inclined 65° with t...

Q: A brick is placed in an insulated calorimeter containing 5.000 kg of water. The temperature of the w...

A: Given Mass of water (Mw) = 5.000 kg & Calorimeter is insulated . Temperature of...

Q: 4. Voltage. A cell has a terminal voltage of 50 V for a current of 10.0 A, and 54 V for a current of...

A: We have to find the emf and internal resistance.

Q: Why is the depth of floatation in sea water (S=1.03) of an object lesser than in fresh water (S=1.0)...

Q: Problem 4: A skateboarder is attempting to make a circular arc of radius r = 11 m in a parking lot. ...

Q: What is the order of magnitude difference between something that works in nanoseconds and something ...

A: Time in milliseconds when taken in seconds is 1 ms = 10-3 s Time in nanoseconds when taken in second...

Q: . Use the circular orbit velocity relationship derived in 1) to calculate the orbit velocities for M...

Q: Which of the following diagrams best illustrates the electric field in the area around two identical...

A: Explanation We know , Electric field lines originates from positive charge enters in to the negati...

Q: e- An arow Is lauinched at va so m/s and 10°. Find the maximun and the time it takes to reach this h...

Q: 1. When a resistor with resistance R is connected to a 1.50 V flashlight battery, the resistor consu...

Q: 2. A person with body resistance between his hands of 10 ka accidentally grasps the terminals of a 1...

Q: Two cities are 1100 km apart and lie on the same north-south line. The latitude of the northernmost ...

Q: The diameter of a carbon atom is 0.000 000 000 165 m. What is this number expressed in nanometers? ...

A: Solution:- The diameter of the carbon atom is 0.000000000165 m. That can be written as Diameter =...

Q: has calls with a resistance of 25 ohm operates from a voltage of 238 V. When the mc s operating at i...

A: An electric current is a stream of charged particles, such as electrons or ions, moving through an e...

Q: The following are statements that describe Electric Potential EXCEPT: A potential energy per unit ch...

A: 3) electric potential = V =Uq 4) potential energy = U =K q1q2r

Q: Trying to stay awake for an all-night study session, a student makes a cup of coffee by first placin...

A: Given: m =500g =0.5 kgT1 =20.0 °CT2=95.0 °C

Q: 15. Please consider the following circuit (Yay! Last question of this set!). RB RA А Rc RD с— 12 V R...

A: Equivalent resistance in series R = R1 + R2 Equivalent resistance in parallel 1/R = 1/R1 + 1/R2

Q: What is the time period? What is the frequency? What is the Amplitude

A: GivenGraph as shown in figure

Q: A typical atomic nucleus is about 5x10^-15m in radius. Use the uncertainty principle to place a lowe...

Q: A parallel plate capacitor has 1 µF capacitance. One of its two plates is given +2 µC charge and the...

Q: Read the question carefully and give me right solution with clear calculations. The standard error o...

A: Given, Standard error SE = 3'' Let sd be the standard deviation n = 5 The formula for standard err...

Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

An ice skater with rotational inertia I is spinning with angular speed w. She pulls
her arms in, and thereby increasing her angular speed to 4w. What is her
rotational inertia then?
O 1/4
O 1/2
21
O 41

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Angular speed, acceleration and displacement

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A bicycle tire is spinning clockwise at 2.50 rad/s. During a time period t = 1.25 s, the tire is slopped and spun in the opposite (counterclockwise) direction, also at 2.50 rad/s. (Calculate (a) the change in the tires angular velocity and (b) the tire's average angular acceleration av.
An ice skater is preparing for a jump with turns and has his arms extended. His moment of inertia is 1.8kgm2 while his arms are extended, and he is spinning at 0.5 rev/s. If he launches himself into the air at 9.0 m/s at an angle of 45 with respect to the ice, how many revolutions can he execute while airborne if his moment of inertia in the air is 0.5kgm2 ?
A gymnast does cartwheels along the floor and then launches herself into the air and executes several flips in a tuck while she is airborne. If her moment of inertia when executing the cartwheels is 13.5kgm2 and her spin rate is 0.5 rev/s, how many revolutions does she do in the air if her moment of inertia in the tuck is 3.4kgm2 and she has 2.0 s to do the flips in the air?
A potters wheel moves uniformly from rest to an angular speed of 1.00 rev/s in 30.0 s. (a) Find its average angular acceleration in radians per second per second. (b) Would doubling the angular acceleration during the given period have doubled the final angular speed?
While driving his motorcycle at highway speed, a physics student notices that pulling back lightly on the right handlebar tips the cycle to the left and produces a left turn. Explain why this happens.
There an analogy between rotational and physical quantities. What rotational quantities are analogous to distance and velocity?
A baseball catcher extends his arm straight up to catch a fast ball with a speed of 40 m/s. The baseball is 0.145 kg and the catcher’s arm length is 0.5 m and mass 4.0 kg. (a) What is the angular velocity of the arm immediately after catching the ball as measured from the arm socket? (b) What is the torque applied if the catcher stops the rotation of his arm 0.3 s after catching the ball?
A wheel is rotating about a fixed axis with constant angular acceleration 3 rad/s2. At different moments, its angular speed is 2 rad/s, 0. and +2 rad/s. For a point on the rim of the wheel, consider at these moments the magnitude of the tangential component of acceleration and the magnitude of the radial component of acceleration. Rank the following five items from largest to smallest: (a) |at| when = 2 rad/s, (b)|ar| when = 2 rad/s, (c)|ar| when = 0, (d) |at| when = 2 rad/s, and (e) |ar| when = 2 rad/s. If two items are equal, show them as equal in your ranking. If a quantity is equal to zero, show that fact in your ranking.
Suppose a child walks from the outer edge of a rotating merry-go-round to the inside. Does the angular velocity of the merry-go-round increase, decrease, or remain the same? Explain your answer. Assume the merry-go-round is spinning without friction.
While punting a football, a kicker rotates his leg about the hip joint. The moment of inertia of the leg is 3.75kgm2 and its rotational kinetic energy is 175 J. (a) What is the angular velocity of the leg? (b) What is the velocity of tip of the punter’s shoe if it is 1.05 m from the hip joint?
A truck with 0.420-m-radius tires travels at 32.0 m/s. What is the angular velocity of the rotating tires in radians per second? What is this in rev/min?
Olympic ice skaters are able to spin at about 5 rev/s. (a) What is their angular velocity in radians per second? (b) What is the centripetal acceleration of the skater's nose if it is 0.120 m from the axis of rotation? (c) An exceptional skater named Dick Button was able to spin much faster in the 1950s than anyone since—at about 9 rev/s. What was the centripetal acceleration of the tip of his nose, assuming it is at 0.120 m radius? (d) Comment on the magnitudes of the accelerations found. It is reputed that Button ruptured small blood vessels during his spins.