Advertisements
Advertisements
प्रश्न
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The loss in potential energy of the body,
एक पंक्ति में उत्तर
Advertisements
उत्तर
Mass of the body = 5 kg
P.E. at height 10m = mgh = 5 × 10 × 10 = 500 J
P.E. at height 4 m = mgh = 5 × 10 × 4 = 200 J
Loss in P.E. = (500 – 200) J = 300 J
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Define 1 J of work.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B does the same in 15 s. Compare the work done.
Is work done a scalar or a vector physical quantity?
Is kinetic energy a scalar or a vector physical quantity?
Give an example of a body possessing no K.E.
Does the total energy of a body always remain constant?
Name four different forms of energy.
State the energy changes which take place when A toy car with a wound spring moves on ground.
A is a push or a pull ______.
