Question

List all the forces acting on (a) pulley A, (b) the boy and (c) the block C in the figure (4-Q3).

Answer 1

Forces acting on the pulley A:

1. A tension exerts electromagnetic force between the string and pulley A.

2. A pair of gravitational force between the Earth and pulley.

Forces acting on the boy:

1. A tension exerts electromagnetic force between the string and the boy.

2. A pair of gravitational force between the Earth and the boy.

Forces acting on the block C:

1. A tension exerts electromagnetic force between the string and block C.

2. A pair gravitational force between block C and the Earth.