A rotating solid cylinder has 40 J of Rotational Kinetic Energy (KEr). If the mass (M) of the cylinder is doubled, the new Rotational Kinetic Energy (KEr), is  a. 80 J b. 160J c. 120J d. 200 J

Q: A figure skater begins her scratch spin on frictionless ice under negligible drag with a rotational…

A: From the angular momentum conservation, Here, Ii, ωi, If  and ωf represent the initial moment of…

Q: A 40-kg cylinder pulley with a radius of 0.2 m rotates at a constant angular speed of 4 rad/s. What…

A: mass of cylinder pulley (m) = 40 kg radius (r) = 0.2 m angular speed (ω) = 4 rads

Q: *30. ao The drawing shows a graph of the angular velocity of a rotating wheel as a function of time.…

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Q: 35N 20N 30° 150 4cm 50N 30°

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Q: A rotating wheel requires 2.96-s to rotate through 37.0 revolutions. Its angular speed at the end of…

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Q: The blades of a wind turbine are 30 m in length and rotate at a maximum rotation rate of 20 rev/min.…

A: Given,

Q: 5. A grinder disc of mass 2.0 kg with 8.0 cm radius rotates at 500 rev/min. What is its rotational…

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Q: The rotational inertia of a collapsing spinning star changes to 1/4 its initial value. What is the…

A: Let Initial Rotational Inertia or Moment of Inertia of star = I Hence final moment of inertia = I/4

Q: 3. A metal ring of radius 8.50 cm and a mass of 425 g is rotating at a constant 36.0 rad/s. A) What…

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Q: What is the moment of inertia I of an object that rotates at 10.0 rev/min about an axis and has a…

A: GivenKinetic Energy (KE) = 24 JAngular Speed (N) = 10 RPMKinematic energy ,angular velocity and mass…

Q: A rotating wheel requires 2.96-s to rotate through 37.0 revolutions. Its angular speed at the end of…

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Q: 2. A wheel starts from rest and reaches a rotational speed of 100 rev/min within 30 rev. Assuming a…

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Q: If an object has a moment of inertia 22 kg-m2 and rotates with an angular speed of 110 radians/s,…

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Q: A 4 kg ball with a 0.5 m radius rolls at a constant 4 rad/s. The rotational inertia of the ball is…

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Q: 5. A figure skater jumps into the air completing a one and a half (1.5 turn) revolution axel. The…

A: Given number of turns in 0.5 second is 1.5means 3turns per second.  Angular displacement =3×2πrad So…

Q: A round grindstone with a moment of inertia 1600 kg.m2 is rotating at an angular velocity of 6…

A: Given data, Moment of inertia of grindstone, I = 1600 kgm2  angular velocity of grindstone, ω = 6…

Q: An electric sander consisting of a rotating disk of mass 0.7 kg and radius 10 cm rotates at 15…

A: Final rotation kinetic energy

Q: A 240-N solid sphere that is 0.200-m in radius rolls 6.00-m down a ramp that is inclined at 37.0°…

A: Given:  Weight of the solid sphere = W = 240 N Radius of the sphere = r = 0.2 m Distance rolled down…

Q: The ramp on the figure is 0.75 m high. The object is a 2.0 kg cylinder with radius of r = 0.10 m.…

A: Height of the ramp is H = 0.75 m Mass of the cylinder is m = 2.0 kg Radius of the cylinder is r =…

Q: A disk of radius 0.5-meter and mass of 20-Kg starts from rest and accelerates uniformly. It is known…

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Q: 8. A machine part rotates at an angular speed of 0.060 rad/s; its speed is then increased to 2.2…

A: Given:  final angular speed = 2.2 rad/sInitial angular speed = 0.060 rad/sAngular acceleration =…

Q: turntable 46 cm is diameter starts from rest and makes its first complete revolution in 3.60 s with…

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Q: 8. A 3 kg uniform disk has a radius of 2 m. An external torque of 10 N-m is applied to the outside…

A: Given: The mass of the disk is 3 kg. The radius of the disk is 2 m. The torque is 10 N-m. The time…

Q: At a track and field meet a discus is thrown so that it spins at 5 revolutions per sccond and moves…

A: Given data Forward velocity of the disc, v=8 m/s Mass of the disk, m=2 kg Radius of the disk, r=0.11…

Q: A competitive diver leaves the diving board and falls toward the water with her body straight and…

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Q: Two wheels A and B in the figure are connected by a belt that does not slip. The radius of B is 5.61…

A: GivenrB=5.61 rA

Q: A 153 g baseball is pitched at 27.89 m/s and spinning at 40 rad/s. You can treat the baseball as a…

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Q: Two wheels A and B in the figure are connected by a belt that does not slip. The radius of B is 3.20…

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Q: The figure gives angular speed versus time for a thin rod that rotates around one end. (a) What is…

A: Given: The graph between angular speed and time is given.Find: (a) Magnitude of the rod's angular…

Q: A spherical shell with a mass of 1.43 kg and a radius of 0.39 m is rolling across the level ground…

A: The angular speed ω of a rotational object which is moving with initial angular speed ω0 and…

Q: A wheel rotates about a fixed axis with an initial angular velocity of 20 rad/s. During a 5.0-s…

A: The equation for angular acceleration is given by,

Q: Name A large yo-yo (aka "solid cylinder") with a mass of 19 kg has a linear velocity of 2.8 m/s and…

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Q: Rotational Inertia: a.) What would the the rotational inertia (I) of: scoop on top: I1 = kg-m2 cone…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: A frictionless pulley, which can be modeled as a 0.80 kg solid cylinder with a 0.30 m radius, has a…

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Q: A rotating solid sphere, (mass = 1kg, radius = 25 cm) starts to spin from rest with a constant…

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Q: An ice skater with rotational inertia I is spinning with angular speed w. She pulls her arms in, and…

A: GivenInitial rotational inertia =IInitial angular speed =ωFinal angular speed (ω') = 4ω

Q: 5. A grinder disc of mass 2.0 kg with 8.0 cm radius rotates at 500 rev/min. What is its rotational…

A: The given data are: m=2 kgr=8 cm=0.08 mN=500 rev/min Here, m, r, and N are the mass, radius, and…

Q: A solid sphere has 50 J rotational kinetic energy. If its mass is doubled, the new rotational…

A: Ans:- Image-1

Q: Two wheels A and B in the figure are connected by a belt that does not slip. The radius of B is 2.10…

A: Since both are connected by belt so tangential speed of both will be same  Now,   VA = VB  rAwA =…

Q: a 20 Nm torque acts on a wheel that has 150kgm^2 moment of inertia  1.calculate the angular…

A: Given data: Applied torque (T) = 20 N.m Moment of inertia (I) = 150 kg.m2 Need to determine the…

Q: A wheel has a constant angular acceleration of 4.0 rad/s?. During a certain 9.0 s interval, it turns…

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Q: Two wheels A and B in the figure are connected by a belt that does not slip. The radius of B is 3.32…

A: Write the expression for the velocity as given below. v=rω Here, v is the velocity, r is the radius,…

Q: A fan is rotating with an angular velocity of +20 rad/s. You turn off the power and it slows to a…

A: Given  Angular velocity of fan  wo = 20 rad/s Angle rotated before coming to stop  @ = 5.0 rad a) To…