Question

pls help me I won't understand this activity of 11.7​

Answer 1

Answer:

In this activity..

Explanation:

A trolley is there which is connected with a string or wire to a object which is hanging on the table by increasing wieght of object . the trolley started moving ..and .the wooden blocks which are on the way of trolley is displaced by trolley...

So this shows that there is work done by trolley because the wooden block displaces from its position...

PLZz mark as brainlist