Q14.

The displacement of a particle oscillating along the x-axis is given as a function of time according to the equation: . The magnitude of the maximum acceleration of the particle is: ??

Q15.

A block of mass 2.0 kg attached to a spring oscillates in simple harmonic motion along the x axis. The limits of its motion are x = −20 cm and x = + 20 cm and it goes from one of these extremes to the other in 0.25 s. The mechanical energy of the block-spring system is: ??

Q16.

The mechanical energy of a block-spring system executing simple harmonic motion is 8.0 J and the amplitude x_m=12 cm. When K = 6.0 J, the displacement of the block is:??