Advertisements
Advertisements
प्रश्न
What is the amount of energy spent in lifting 1 kg through 1 m? Take g = 10 ms-2.
संख्यात्मक
Advertisements
उत्तर
P.E = mgh = 1 x 10 x 1 = 10J
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
When do we say that work is done?
Power spent by a body depends on the time for which it does work.
The energy of a body is its capacity to do .........
Name the force acting away from the centre of circular path.
What do you mean by the term 'work'?
What do you mean by a kilo joule?
A machine raises a load of 750 N through a height of 16 m in 5s. calculate:
(i) work done by machine,
(ii) power at which the machine works.
Name the physical quantity associated with the 'rate of doing work'.
A horse exerts a pull on a cart of 300 N so that the horse-cart system moves with a uniform speed 18 km/h on a level road. Calculate the power developed by the horse in watt and also find its equivalent in horse power.
________ is said to be done when a force is acting on it.
