A thin rod of length 0.75 m and mass 0.42 kg is suspended freely from one end. It is pulled to one side and then allowed to swing like a pendulum, passing through its lowest position with angular speed 4.0 rad/s. Neglecting friction and air resistance, find (a) the rod’s kinetic energy at its lowest position and (b) how far above that position the center of mass rises.

Q: Two thin rods of length L are rotating with the same angular speed w (in rad/s) about axes that pass…

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Q: You pull on a string with a horizontal force of magnitude Fyh = 56 N that is attached to a block of…

A: A) Energy due to friction = ((m_b*g*cos*(θ)-Fsin(θ))*u*d                                          =…

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A: Speed of the center of mass. From conservation of energy

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Q: In the figure, a small 0.182 kg block slides down a frictionless surface through height h = 0.846 m…

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A: Mass of the disc = M = 36.1 kg Radius = R = 0.21 m Force = F = 32 N Moment of Inertia of the disc =…

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.