What is the usual name of the forces which cannot produce motion in a body but only change its shape ?

Name the physical quantity which causes motion in a body.

The activity of the force to produce rotational motion in a body is called as

There are two types of forces X and Y. The forces belonging to type X can produce motion in a stationary object but cannot change the shape of the object. On the other hand, forces belonging to type Y cannot produce motion in a stationary object but can change the shape of the object. What is the general name of the forces such as (a) X, and (b) Y?

Name a human cell which can change its shape.

State whether the following statement is true or false Unbalanced forces acting on a body change its shape.