Question

Name the type of force which acts in the following cases:

1. A coolie lifts a luggage
2. A bicycle comes to rest slowly when the cyclist stops pedaling
3. A stone falls from a roof
4. A comb rubbed with silk attracts bits of paper
5. A string hangs with a load
6. A horse moves a cart
7. A magnet attracts an iron pin
8. A boy opens a door
9. An apple falls from a tree
10. A man rows a boat

Answer 1

Force:

1. Force is defined as the push or pull on an object that causes it to change its velocity.
2. Force is an external agent capable of changing a particular body's state of rest or motion.
3. It has a magnitude and direction.
4. The SI unit of force is Newton(N).
5. The Force can be measured using a spring balance.

The type of force which acts in the following cases:

1. A coolie lifts luggage- Muscular force
2. A bicycle comes to rest slowly when the cyclist stops pedaling- Frictional force
3. A stone falls from a roof- Gravitational force
4. A comb rubbed with silk attracts bits of paper- Electrostatic force
5. A string hangs with a load- Force of tension
6. A horse moves a cart- Muscular force
7. A magnet attracts an iron pin- Magnetic force
8. A boy opens a door- Muscular force
9. An apple falls from a tree- Gravitational force
10. A man rows a boat- Muscular force