What is the requirement for a force to come into play?
Interaction of one object with another object results in force between the objects. That is, interaction is the factor which is essential for force to act.
To move a loaded trolley we have to ____________ it.
A charged body ____________ an uncharged body towards it.
Give two examples each of situations in which you push or pull to change the state of motion of objects.
Objects are pushed or pulled inorder to change it's state of motion.
Examples of push are:
1) We push a door to open it.
2) A football player kicks the ball and pushes it.
Examples of pull are:
1) We pull the desk to change its position.
2) The rope is pulled, to draw a bucket of water from a well.
Give two examples of situations in which applied force causes a change in the shape of an object.
The shape of an object can be changed due to applied force. For example:
1. When force is applied on a lump of dough on a plate.
2. The spring fitted under the seat of a bicycle gets compressed when you sit on the seat.
To draw water from a well,we have to ____________ the rope.