In which of the following cases forces may not be required to keep the

1.	In which of the following cases forces may not be required to keep thea) particle going in a circleb) particle going along a straight linec) momentum of the particle constantd) acceleration of the particle constant
Answer» Explanation: Force is the rate of change in momentum, F= dP/dt. (p is momentum) p=mv If the rate of change in momentum is ZERO or momentum is constant then NET force ACTING on the BODY is zero F= dp/dt =0 when P is constant or zero

In which of the following cases forces may not be required to keep thea) particle going in a circleb) particle going along a straight linec) momentum of the particle constantd) acceleration of the particle constant

Answer»

Explanation:

Force is the rate of change in momentum,

F= dP/dt. (p is momentum)

p=mv

If the rate of change in momentum is ZERO or momentum is constant then NET force ACTING on the BODY is zero

F= dp/dt =0 when P is constant or zero