1. Tardigrade
  2. Question
  3. Physics
  4. An external force is applied on a rigid body so that it comes in motion. Which of these statements is incorrect? I. If the total force on the body is zero, then the total linear momentum of the body does not change with time. II. If the total torque on the rigid body is zero, the total angular momentum of the body does not change with time. III. Volume of rigid body remains constant. IV. Shape of rigid body can change easily.

Q. An external force is applied on a rigid body so that it comes in motion. Which of these statements is incorrect?
I. If the total force on the body is zero, then the total linear momentum of the body does not change with time.
II. If the total torque on the rigid body is zero, the total angular momentum of the body does not change with time.
III. Volume of rigid body remains constant.
IV. Shape of rigid body can change easily.

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Solution:

Statement IV is incorrect and it can be corrected as, The shape of rigid body must not change on application of force.
Rest statements are correct.