A particle is in linear simple harmonic motion between two points. A and B, 10 cm apart (figure) take the direction from A to B as the positive direction and choose the correct statements.

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 (figure) take the direction from A to B as the positive direction and choose the correct statements.
Answer» The sign of velocity, acceleration and FORCE on the particle when it is 3cm AWAY from a going towards B are positive. The sign of velocity of the particle at C going towards B is negative. The sign of velocity, acceleration and force on the particle when it is 4cm away from B going towards A are negative. The sign of acceleration and force on the particle when it is at points B is negative. Solution :When the particle is 3 CM away from A going towards B. So velocity is positive because direction from A to B is positive and acceleration is always towards mean position and so acceleration is positive and HENCE force is also positive. So statement A is correct. When particle is at C, velocity is towards B hence positive. Hence, Statement B is incorrect. When the particle is 4 cm away from B going towards a velocity is negative and acceleration is towards mean position hence negative so statement C is correct. Acceleration is always towards mean position in SHM. When the particle is atB, acceleration and force are towards B to A that is negative. Hence, statement D is correct.