Question

Name the type of forces involved in the following : 

(a) A horse pulling a cart. 

(b) A sticker attached to steel almirah without glue. 

(c) A coin falling to the ground on slipping from hand. 

(d) A plastic comb rubbed in dry hair picking up tiny pieces of paper. 

(e) A moving boat coming to rest when rowing is stopped.

Answer 1

(a) Muscular force is a contact force due to action of muscles. 

(b) Magnetic force

(c) Gravitational force Objects fall towards the earth due to its gravity.

(d) Electrostatic force The force acting on an object due to its charged particles.

(e) Frictional force Stream of water opposed to moving boat to stop.