A particle is in linear S.H.M. between two points A and B, 10 cm apart. Take the direction from A to B as the positive direction and give the signs of velocity, acceleration and force on the particle when itat the end A.

A particle is in linear S.H.M. between two points A and B, 10 cm apart

1.	A particle is in linear S.H.M. between two points A and B, 10 cm apart. Take the direction from A to B as the positive direction and give the signs of velocity, acceleration and force on the particle when itat the end A.
Answer» Solution :Refer Fig., here A and B REPRESENT the two EXTREME positions of an S.H.M. For velocity, the direction from A and B is taken to be positive. For ACCELERATION and the force, the direction is taken positive if directed along AP and negative if directed along BP. At the end A, the particle executing S.H.M. is momentarily at rest being its extreme position of motion, hence its velocity in zero acceleration is +ve because directed along AP. Force is also +ve since the force is directed towards AP i.e. +ve direction.