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AP® Physics 1 & 2

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Torque on a Bar with Mass

APPH12-RQ2JQ5

Shown in the image is a freely rotating bar with mass currently at rest with the axis of rotation marked by an $X$. The bar's mass of $5\text{ kg}$ is uniformly distributed the bar has a length, $L$, of $2\text{ m}$. Two forces are applied to the ends of the bar as shown in the image.

Created for Albert.io. Copyright 2016. All rights reserved.

What is the net torque on the bar due to all external forces?

A

$26.64\ \mathrm{N\cdot m}$

B

$36.04\ \mathrm{N\cdot m}$

C

$4.62\ \mathrm{N\cdot m}$

D

$2.12\ \mathrm{N\cdot m}$