First slide

Torque

Question

A uniform beam of weight W is attached to a vertical wall by a hinge H. The beam is held horizontal by a rope as shown below :
Which one of the following best shows the direction of the reaction force R at the hinge?

Easy

A
B
C
D

Solution

For rotational equilibrium net torque about COM of beam should be zero and for translational equilibrium net force must be zero.

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