Question

given below are few situation, study them and state in which of the given cases work is said to be done. Give reason for your answer:
(i) A person pushing hard a huge Rock but the rock does not move.
(ii) A bullock pulling a cart up to 1 kilometre on road ​

Answer 1

Answer:

work is done by the Bullock pulli-ng a cart up to 1kilometre on road

Explanation:

(i) A person pushing hard a huge Rock but the rock does not move- there is no displacement, so there is no work done

(ii) A bullock pulling a cart up to 1 kilometre on road - there is a displacement up to 1kilometre on road, so work is done

Answer 2

Answer:

hear is your answer

(a) A person pushing hard a huge rock but the rock does not move.

(b) A bullock pulling a cart up to 1 km on road.

(c) A girl pulling a trolley for about 2m distance

(d) A person standing with a heavy bag on his head.

Explanation:

hope it is help full.☺️