Question

The lower surface of a cube is fixed. On its upper surface, force is applied at an angle of ${30}^{\circ }$ from its surface. The change will be in its:

• A. shape.
• B. size.
• C. volume.
• D. both shape and size.

Answer 1

The correct option is D both shape and size.

When the force is applied, it will cause motion of the cube parallel to the surface and also cause the cube to compress. Hence, its size will change.

The compression will not be symmetric as the direction of force is not symmetric. Hence, its shape will change.