Question Detail

PHY 101 Rotational Motion Objective Question
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Question

The condition for a rigid body to be in static equilibrium is that
Options
A the net force on the body is zero.
B the net torque on the body is zero.
C both the net force and the net torque on the body are zero.
Correct Answer
D the body is at rest.
Correct Answer

Option C is the correct answer.

Detailed Explanation

For a rigid body to be in complete static equilibrium (no translational or rotational acceleration), two conditions must be met simultaneously: first, the vector sum of all external forces must be zero (∑F = 0), and second, the sum of all external torques about any point must be zero (∑τ = 0).

Hint

Equilibrium requires no change in translational motion and no change in rotational motion. What two vector quantities must sum to zero to ensure this?

Question Info

Course: PHY 101
Topic: Rotational Motion
Type: Objective
Difficulty: Not specified
Question 764 of 1250
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