Should the handles and bristles of a toothbrush be made of the same material ? Explain your answer.

Can this be a net for a die? Explain your answer.

A mass of 10 kg is at a point A on a table. It is moved to a point B. If the line joining A and B is horizontal, what is the work done on the object by the gravitational force? Explain your answer.

Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advice Rana , giving your reason.

The following four wires of length L and radius r are made of the same material .Which of these will have the largest extension,when the same tension is applied?