The Wheel of Fortune is divided into twelve angular sections, each of which is 30 degrees Determine the total number of revolutions when the wheel stops, The deceleration of the wheel has a magnitude of 0.43 rev/sec and the initial angular velocity is 7.10 revisec. 12 11 2. 10 8 5 7. 6 Round off answer to the nearest whole number. Input only the number. Moving to the net question prevents changes to this answer Question 1 of 2

The Wheel of Fortune is divided into twelve angular sections, each of which is 30 degrees Determine the total number of revolutions when the wheel stops, The deceleration of the wheel has a magnitude of 0.43 rev/sec and the initial angular velocity is 7.10 revisec. 12 11 2. 10 8 5 7. 6 Round off answer to the nearest whole number. Input only the number. Moving to the net question prevents changes to this answer Question 1 of 2

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 7P: An electric motor rotating a workshop grinding wheel at 1.00 102 rev/min is switched off. Assume...

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An electric motor rotating a workshop grinding wheel at 1.00 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.00 rad/s2. (a) How long does it take the grinding wheel to stop? (b) Through how many radians has the wheel turned during the time interval found in part (a)?
A cooling fan is turned off when it is running at 930 rev/min. It turns 1,500 revolutions before it comes to a stop. What was the fan's angular acceleration, assumed constant? Express your answer using three significant figures. a=______rads/s^2 Part B How long did it take the fan to come to a complete stop? Express your answer to three significant figures and include the appropriate units. t=_______
Question 1 a) Calculate the linear velocity (in m/s) of the earth’s rotation about its axis if its equatorial radius is 6378 km. b) If ‘N’ is the rotational frequency of an object in revolutions per hour, write the expression for the angular velocity (speed), for this object in revolutions per second in terms of ‘N’. (Express your answer in simplest terms and standard form).
An 8.79cm diameter floppy disk rotates at its fastest at 470 rpm. Part A: Express the angular velocity of the disk in revolutions per seconds? Part B: What is the time period of this revolution? Use scientific notation for your answer. Part C: What is the linear velocity of a point at the rim of the disk? Part D: What is the angular velocity at the center of the disk? Part E: If the disk took 3.2 sec to spin up to 470 rpm from rest, what was the average angular acceleration? How many revolutions did the disk complete within this time? What is the net displacement? Part F: If you turn off the floppy disk drive and the disk comes to a stop in 6.7 s, what is the average angular acceleration for this period of motion?
An 8.79cm diameter floppy disk rotates at its fastest at 470 rpm. Part A: Express the angular velocity of the disk in revolutions per seconds? Part B: What is the time period of this revolution? Use scientific notation for your answer. Part C: What is the linear velocity of a point at the rim of the disk? What is the angular velocity at the center of the disk? If the disk took 3.2 sec to spin up to 470 rpm from rest, what was the average angular acceleration? How many revolutions did the disk complete within this time? What is the net displacement? If you turn off the floppy disk drive and the disk comes to a stop in 6.7 s, what is the average angular acceleration for this period of motion?
Please answer C, D, E The angular position of a rod varies as 20.7t2 radians from time t = 0. The rod has two beads on it as shown in the following figure, one at r1 = 13 cm from the rotation axis and the other at r2 = 32 cm from the rotation axis. (Note: figure may not be drawn to scale.) (a) What is the instantaneous angular velocity (in rad/s) of the rod at t = 3 s? (Indicate the direction with the sign of your answer. Round your answer to at least one decimal place.) 1.24.2 rad/s, ANSWERED (b) What is the angular acceleration (in rad/s2) of the rod at t = 3 s? (Indicate the direction with the sign of your answer.) 41.4 rad/s2, ANSWERED (c) What are the tangential speeds of the beads (in m/s) at t = 3 s? vt, 1 =16.146 m/s, ANSWERED vt, 2 =____m/s (d)What are the tangential accelerations of the beads at t = 3 s? (Enter the magnitudes in m/s2.) at, 1 = ______ m/s2 at, 2 = ______ m/s2 (e) What are the centripetal accelerations of the beads at t = 3 s? (Enter the magnitudes…
Multiple part question Here are the needed details: Five rotations took 5.15 seconds 1 rotation took 1.07s Distance from shoulder to elbow is 29 cm distance from shoulder to middle of the hand is 57cm. Questions: 2. A how far in degrees did the hand travel during the five rotations? B. How far in radians did the hand travel during the five rotations? C. How far in meters did the hand travel during the five rotations? 3. A. What was the average angular speed (degrees/s and rad/s) of the hand? B. What was the average linear speed (m/s) of the hand? C. Are the answers to a and b the same or different? Explain.
A disk drive with a radius of 0.065 m starts rotating from rest with a constant angular acceleration. It takes 2.5 seconds to complete ten revolutions. One complete revolution takes how long? What is the linear displacement of the rim after ten revolutions? Determine the angular acceleration of the disk in radians per second squared (rad/s^2). Please provide work so I may better understand, thank you.
question1 (a)You just realized that your analog wristwatch is always 31 seconds behind the real-time. Calculate the angular speed of your Second hand, in milli-rads/s (b)You just realized that your analog wristwatch is always 8.1 seconds behind the real-time. Calculate the angular speed of your Hour hand, in micro-rads/s.
The tires on a new compact car have a diameter of 2.0 ft andare warranted for 60 000 miles. (a) Determine the angle (inradians) through which one of these tires will rotate duringthe warranty period. (b) How many revolutions of the tire areequivalent to your answer in part (a)?
A record player works at a clockwise angular speed of 3.53 rad/s, and takes 1.06 s to steadily accelerate up to that working speed when it is first switched on. Use radians as the standard unit for angles. ( I already answered the first four... but I am confused on how you find) What angle does the record rotate through during the acceleration period, in given units? for rad, rev, and angle
A wind turbine is rotating counterclockwise at 0.83 rev/s and slows to a stop in 21 s. Its blades are 17 m in length. (a) What is the angular acceleration of the turbine (in rad/s2)? (Indicate the direction with the sign of your answer.) (b) What is the centripetal acceleration (in m/s2) of the tip of the blades at t = 0? (Enter the magnitude. Round your answer to at least two decimal places.) m/s2 (c) What is the magnitude (in m/s2) of the total linear acceleration of the tip of the blades at t = 0? (Round your answer to at least two decimal places.) m/s2 What is the angle that this total linear acceleration vector makes with the centripetal acceleration vector? (Enter the magnitude of the smallest such angle in degrees.)