Question

2. What contact forces are applied in the following:
(a) Stretching a coiled spring
(b) Pulling a cart
(c) Kicking a football
(d) Ploughing
(e) When a body moves on a rough surface
(1) Rolling of a ball on the floor​

Answer 1

(a) Stretching a coiled spring

(b) Pulling a cart

(c) Kicking a football

(d) Ploughing

(e) When a body moves on a rough surface

(f) Rolling of a ball on the floor​

ANSWER:

(a) muscular force

(b) muscular force

(c) muscular force

(d) muscular force

(e) frictional force

(f) frictional force