What is the P.E. of a Body Lying on the Surface of the Earth? - Physics

What is the P.E. of a body lying on the surface of the earth?

One Line Answer

P.E of a body lying on a floor is zero.

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Chapter 1: Force, Work, Energy and Power - Exercise 1.5 i [Page 53]

Chapter 1 Force, Work, Energy and Power
Exercise 1.5 i | Q 25 | Page 53

What is the work done by the moon when it revolves around the earth?

How is work related to energy?

Fill in the blank with suitable word :
The work done on a body moving in a circular path is __________

Name five appliances or machines which use an electric motor.

P, Q and R are three forces which act as shown in fig.

The point O lies in the same plane. Given, P = Q = R = 10N

(i) Which force has the least moment about O? Give a reason.

(ii)Which force has the greatest moment about O? Give a reason.

A man carrying a suitcase in his hand is walking horizontally. What is the work done against gravity?

Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.

A donkey is carrying a load on its back.

State whether work is done or not, by writing yes or no, in the following case:

A boy climbs up 20 stairs.