Ram took with him some nylon ropes,when he was going for rock climbing.Can you tell why he selected nylon ropes instead of ropes made up of cotton or jute?

Explain the reasons for the following (a) Why dust comes out of carpet when it is beaten with a stick ? (b) Luggage kept on the roof of a bus is tied with a rope. (c ) Why a pace bowler in cricket runs from a long distance before he bowls ?

A man of mass 30 kg uses a rope of climb which bears only 450 N. What is the maximum acceleration with which he can climb safely