A particle is in linear simple harmonic motion 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 it is at 3 cm away from A going towards B.

A particle is in linear simple harmonic motion between two points, A a

1.	A particle is in linear simple harmonic motion 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 it is at 3 cm away from A going towards B.
Answer» Solution :In the figure, the point A and B, 10 cm apart, are the the EXTREME positions of theparticle in SHM, and the point O is the MEAN position. The direction from A to B is positive, as indicated. The direction of velocity, displacement and acceleration from A to B is positive. A 3 cm AWAY from A, that is, at D and going TOWARDS B, v is positive, acceleration and force, being directed towards O are also positive. (+, +, +).