Torque & Acceleration (Rotational Dynamics) Video Lessons

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Problem: A light rigid rod with masses attached to its ends is pivoted about a horizontal axis as shown above. When released from rest in a horizontal orientation, the rod begins to rotate with an angular acceleration of magnitude

FREE Expert Solution

This problem involves net torque and acceleration.

Net torque:

Στ=Iα where I is the moment of inertia.

The torque due to Force:

τ=rFsinθ

Moment of inertia of a point mass:

I = mr2

For a collection of point masses:

I = m1r12 + m2r22 + m3r32 ....

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Problem Details

A light rigid rod with masses attached to its ends is pivoted about a horizontal axis as shown above. When released from rest in a horizontal orientation, the rod begins to rotate with an angular acceleration of magnitude

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