An ice skater starts to spin with an angular velocity of 2 rotations per second, when she moves her arms close together her angular inertia goes down by a factor of 5, how fast would she rotate then? 5 rotations per second 10 rotations per second 2/5 rotations per second O 5/2 rotations per second

Q: The diameter of the base of a tapered drinking cup is 6 cm. The diameter of its mouth is 9 cm. The…

A:

Q: A ceiling fan with 85 cm blades is turning at 60.0 revolutions per minute. The fan coasts to a stop…

A:

Q: An ice skater jumps in the air and brings their arms and legs as close to their center of mass as…

A: Here principle of conservation of angular momentam is applied. As sakter lands he increases…

Q: A thin disk rotates about an axis that goes through its center perpendicular to its plane. The…

A:

Q: A wrench is used to tighten a nut. A 15 Newton force is applied 9 centimeters from the axis of…

A: Given data:  Force (F) = 15 N Distance (r) = 9 cm = 0.09 m Required:  Torque (τ)

Q: A merry go round at a playground can be modeled as a solid disk of mass 40 kg. While it rotates 20…

A:

Q: A fan is spinning with an angular velocity of 3500 revolutions per minute (rpm).  When turned off,…

A: From kinematics, the expression for the final angular velocity is:

Q: A wheel with a diameter of 1 meter rotates the following angular distances, calculate the linear…

A:

Q: A bicycle tire starts from rest and 10 seconds later has an angular velocity of 2.5 rev per seconds.…

A: Angular acceleration is time rate of change of angular velocity

Q: A wheel that starts from rest has an angular speed of 20 rad/s after being uniformly accelerated for…

A:

Q: An electric motor is spinning at a rate of 60 rpm It then slows down with a constant angular…

A:

Q: A ballet dancer has a moment of inertia of 5 when her arms reach her body and 20  when her arms are…

A:

Q: A disk is constructed so that it can be made to rotate about an axis through it's center of mass…

A: Given: A disc is rotating about an axis through CM, rim(R), halfway b/w R & CM(H).

Q: As a figures skater draws her arms closer to her body while spinning, she decreases her. angular…

A: Angular momentum  L=Iω I-rotational inertia ω-Angular velocity

Q: A woman with mass 50 kg is standing on the rim of a large horizontal disk that is rotating at 0.80…

A: L=Idisc+Iwomenω=mdiscr22+mwomenr2ω

Q: An ice skater is spinning on the ice with her arms fully extended. When she pulls in her arms, she…

A:

Q: A typical ten-pound car wheel has a moment of inertia of about 0.35 kg · m². The wheel rotates about…

A: Given : Moment of Inertia ( I ) = 0.35 kg . m2  Number of revolutions = 35 Time = 5 seconds…

Q: A flywheel that is rotating slows down at a constant rate due to friction in its bearing. After one…

A: Given data: Initial angular velocity = ω0 Final angular velocity after t = 1 minute ω = 0.70ω0…

Q: A cat of mass 4.0kg increases its angular speed by py pulling in all it's limbs. It launches from a…

A: Scenario - A cat jumps from a tree trunk with its limbs open. But just after jumping, while it is in…

Q: A figure skater goes into a spin, keeping her arms at her sides. When she extends her arms: A her…

A: Given statement : A figure skater goes into spin, keeping her arms at her sides

Q: A disk rotates freely on a vertical axis with an angular velocity of 30 rpm. An identical disk…

A:

Q: A ball with a weight of 70 N hangs from a string that is coiled around a 3 kg pulley with a radius…

A: Given data: The weight of ball is W=70 N. Mass of pulley is m=3 kg. Radius of pulley is r=0.4 m.…

Q: Which of the following are in equilibrium? Choose all that apply. (NOTE: "spinning up" means the…

A: Equilibrium : A condition in which competing forces or acts are balanced, with neither being…

Q: A torque acting on a rotary body fixed in place tends to produce   Group of answer choices…

A: Torque is defined as a measure of the force that produces rotation of an object about an axis.

Q: Two pulleys have radii 29 cm and 18 cm,  The larger pulley rotates 26 times in 20 seconds.  Find the…

A:

Q: An isolated object is initially spinning at a constant speed. Then, although no external forces act…

A: There is no external force is applied to an isolated object that means the angular momentum of the…

Q: A woman with mass 50 kg is standing on the rim of a large horizontal disk that is rotating at 0.80…

A:

Q: The total kinetic energy of a baseball thrown with a spinning motion is a function of: Choose A. its…

A: Given: The baseball is thrown with a spinning motion.   Asked: Total kinetic is function of which…

Q: A student sitting on a chair on a circular platform of negligible mass rotates freely on an air…

A:

Q: A ball with a weight of 70 N hangs from a string that is coiled around a 3 kg pulley with a radius…

A:

Q: An ice skater is spinning about a vertical axis with arms fully extended. If the arms are pull in…

A:

Q: The rotational inertia depends on: mass and how mass is distributed around the axes of rotation mass…

A: I = sum{Mi Ri 2} Here Inertia depends only on mass and the distribution of the body...  Description…

Q: A solid disk of mass 45.0 kg and radius 2.50 m is accelerated from rest to spin at a rate of 4.0…

A: Mass of the disk is M=45 kg Radius of the disk is r=2.50 m a)Rotational inertia of the disk is…

Q: The front and rear sprockets on a bicycle have radii of 8.89 and 4.66 cm, respectively. The angular…

A: Solution: Given Data: Radius of the front sprocket, rf = 8.89 cm, Radius of the rear sprocket, rr =…

Q: An open barrel is spinning with an initial angular velocity. Rain falls into the barrel, filling it…

A:

Q: A rock is wedged in the tread of wheel of a car and is 0.114 meters away from the center the axis of…

A: Given data:   Radius (r) = 0.114 m Angular velocity (ω) = 6.53 revolution/s Required: The tangential…

Q: angular momentum remains the same, rotational kinetic energy increases angular momentum remains the…

A: When girls moves outside then perpendicular distance from center is increases and Angular momentum…

Q: A merry-go-round with a radius of 2.2m rotates 10.0 times every 5.00s. The merry go round has a mass…

A: The radius r=2.2m  The mass m=100kg  To find the angular momentum

Q: Because the rotational inertia is greater, it is the hardest in springboard diving to perform a…

A: Because the rotational inertia is greater, it is the hardest in springboard diving to perform a…

Q: A carousel with a 40-foot diameter makes 5 revolutions per minute. (a) Find the angular speed of the…

A: Given data:  Diameter (d) = 40 foot Angular speed = 5 revolutions per minute

Q: The angular velocity of a wheel increases from 100 to 300 im 10 s. The number of revolutions made…

A: Given: ω1=100ω2=300t=10s

Q: A bicycle slows down uniformly from Vo = 8.4 m/s to rest over a distance of 115 m. Each wheel and…

A: The angular velocity is defined as the ratio of the angular displacement made by an object to the…

Q: A metal ball with 0.27 kg of mass and 0.050 m of radius rolled without slipping on a horizontal…

A: The given values are, m=0.27 kgr=0.050 mh=0.47 mx=1.7 m

Q: Question 13 An ice skater starts to spin with an angular velocity of 2 rotations per second, when…

A:

Q: A person rides a Ferris wheel that turns with constant angular velocity. Her weight is 503.0 N. At…

A:

Q: A person rides a Ferris wheel that turns with constant angular velocity. Her weight is 503.0 N. At…

A: We have givenWeight of person  (W)=503.0 NAt the top of rideApparent Weight (dW)=1.500 NAndAngular…

Q: Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the…

A: Mass, m = 250 kg  diameter, d = 1.5 m  radius, r = 0.75 m  torque, T = 50 N m  initial angular…

Q: A disk with a radius of 4.01 meters is rotating with an angular speed of 8.01 rad/s. The angular…

A: