A needle of a sewing machine moves along a path of amplitude 4 cm with frequency 5 Hz. Find itsacceleration `frac(1)(30)` second after it crossed its mean position.

A needle of a sewing machine moves along a path of amplitude 4 cm with frequency 5 Hz . Find its acceleration [1/30] s after it has crossed the mean position.

A body of mass 0.2 kg performs linear S.H.M. It experiences a restoring force of 0.2 N when its displacement from the mean position is 4 cm . Determine acceleration of the body when its displacement from the mean position is 1 cm.

A particle of mass 10 g moves along a circle of radius 6.4 cm with a constant tangential acceleration. What is the magnitude of this acceleration. What is the magnitude of this acceleration, if the kinetic energy of the particle becomes equal to 8xx10^(-4) J by the end of the second revolution after the beginning of the motion?

A 20 cm long string, having a mass of 1.0g , is fixed at both the ends. The tension in the string is 0.5 N . The string is into vibrations using an external vibrator of frequency 100 Hz . Find the separation (in cm) between the successive nodes on the string.

A particle doing simple harmonic motion amplitude = 4 cm time period = 12sec The ratio between time taken by it in going from its mean position to 2cm and from 2cm to extreme position is

A particle executes simple harmonic motion with an amplitude of 4 cm . At the mean position the velocity of the particle is 10 cm/ s . The distance of the particle from the mean position when its speed becomes 5 cm/s is

A particle moves in a circular path of radius 0.4 m with a constan speed . If it makes 5 revolution in each second of its motion , then the speed of the particle will be