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Physics Solutions Library

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2,786 solutions

Intro to Rotational Kinetic Energy

Q. A merry-go-round has a mass of 1550 kg and a radius of 7.60 m. How much net work is required to accelerate it from rest to a rotation rate of 1.00 ...

Solved • Mar 18, 2019
Parallel Axis Theorem

Q. Find the moment of inertia of a hoop (a thin-walled, hollow ring) with mass exttip{M}{M} and radius exttip{R}{R} about an axis perpendicular to the...

Solved • Mar 18, 2019
Intro to Rotational Kinetic Energy

Q. A hollow spherical shell has mass 8.20 kg and radius 0.225 m . It is initially at rest and then rotates about a stationary axis that lies along a d...

Solved • Mar 18, 2019
Rotational Velocity & Acceleration

Q. A fan blade rotates with angular velocity given by ωz(t) = γexttip{gamma }{gamma} - βexttip{eta }{beta}t2.a) Calculate the angular acceleration as ...

Solved • Mar 18, 2019
Parallel Axis Theorem

Q. Small blocks, each with mass  m , are clamped at the ends and at the center of a rod of length  L  and negligible mass. Compute the moment of inert...

Solved • Mar 18, 2019
Equations of Rotational Motion

Q. An airplane propeller is rotating at 1910 rev/min.a) Compute the propellers angular velocity in rad/s.b) How long in seconds does it take for the p...

Solved • Mar 18, 2019
Equations of Rotational Motion

Q. At t=0 a grinding wheel has an angular velocity of 26.0 rad/s . It has a constant angular acceleration of 31.0 rad/s2 until a circuit breaker trips...

Solved • Mar 18, 2019