What is the ratio of the time taken to go up and come down by a body thrown vertically up?

What is the product of time period and frequency of vibration of a body in SHM?

Differentiate between step up and step down transformer.

A stone is dropped from the top of a tower 100m high. At the same time another stone is thrown vertically upwards from the ground with a velocity of 50 ms^-1 . Find when and where the stones will meet.

Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.

A particle starts oscillating simple harmonically from its equilibrium portion. What is the ratio of KE and PE. of the particle at time T/12 second ? (T is the time period of oscillation)

Figure 5.18 shows a man standing stationary with respect to a horizontal conveyor belt that is accelerating with 1 m s^2 . What is the net force on the man? If the coefficient of static friction between the man’s shoes and the belt is 0.2, up to what acceleration of the belt can the man continue to be stationary relative to the belt? (Mass of the man = 65 kg.)

A body moves from A to B. The velocity of the body at A is u and at B is V. Time taken by the body to move is t: Write down the expression for acceleration ‘a’ of the body.

If two bodies have circular path of radius rt and r2 and the time taken are the same, find the ratio of the -angular speed.

Two bodies are thrown with same velocities at angles a and, (90^@ - a) with the horizontal. What will be the ratio ofmaximum heights attained by them and ii)of horizontal ranges.

What is the acceleration associated with a mass 'rrf moving up an inclined plane (0) with friction mu?