Physics
A ball placed on a table starts rolling down when the table is tilted. This is an example of :
- contact force
- non-contact force
- both (a) and (b)
- none of these
Related Questions
A force can change :
- the size or shape of a body
- the state of rest or of motion of a body
- the dimensions of a body
- All of the above.
The non-contact force is —
- force of reaction
- force due to gravity
- tension in string
- force of the friction
When a comb is rubbed on dry hair, it gets charged. This is an example of :
- Gravitational force
- normal reaction force
- magnetic force
- electrostatic force
The nature of gravitational force is always:
- repulsive
- attractive
- depends on the bodies involved
- None of the above