True or false about rotational motion

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   A rigid body keeps a definite unchanging shape.

2. Statement is true

   No

   Statement

   Every real body is perfectly rigid.

3. Statement is true

   Yes

   Statement

   Torque is a vector quantity.

4. Statement is true

   Yes

   Statement

   The unit of torque is the newton metre.

5. Statement is true

   No

   Statement

   Moment of inertia is measured in kg per metre.

6. Statement is true

   Yes

   Statement

   Rotational equilibrium needs zero net torque.

Instructions

Decide whether each statement is true or false.

Explanation