Question

When a body falls freely towards the earth, then its total energy

Which type of energy conversion is found in a microphone?

A 10 kg ball is thrown upwards with a speed of 5 m/s. (i) Find its potential energy when it, reaches the highest point. (ii) Calculate the maximum height it reaches.

A simple pendulum is released at position A and swings to position B as shown in Figure. One complete oscillation is when the pendulum swings from A to B and then returns to A. Why does the bob eventually come to rest? What happens to its energy eventually?

Read the given passage and answer the questions that follow based on the passage and related studied concepts. When an object is allowed to fall from higher level to a lower level, it gains speed due to gravitational pull, i.e., it gains kinetic energy. Therefore, in possessing height, a body has the ability to convert its height into kinetic energy, i.e., it possesses potential energy. The magnitude of its gravitational potential energy is equivalent to the amount of work done by the weight of the body in causing the descent. If a mass m is at a height h above a lower level, the P.E. possessed by the mass is mgh. The chosen level from which height is measured has no absolute position. It is, therefore, important to indicate clearly the zero P.E. level in any problem in which P.E. is to be calculated. The potential energy of a body may be positive or negative. Based on the above information, Answer the following questions: