Q3:
A block has a mass of 500 g. The block is part of a system
of objects. One end of the block is attached to a string and the other end of the
string is attached to a ball by passing over a pulley, as shown in the diagram.
The ball is inside a box that also contains a spring. A hole in a wall of the
box allows the string to enter the box, pass through the gap in the center of
the spring, and connect to the ball. All the objects in the system are at rest.
How much force does the block apply to the string?
How much force does the string apply to the ball?
How much force does the ball apply to the spring?
How much force does the spring apply to the ball?
How much force does the ball apply to the string?
How much force does the string apply to the block?