Advertisements
Advertisements
प्रश्न
State whether the object possess kinetic energy, potential energy, or both :
A stretched spring lying on the ground ____________.
विकल्प
kinetic energy
potential energy
Both
Advertisements
उत्तर
A stretched spring lying on the ground possesses potential energy.
APPEARS IN
संबंधित प्रश्न
Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
- The body is at the top.
- the body has fallen a distance x.
- the body has reached the ground.
A metal ball of mass 2 kg is allowed to fall freely from rest from a height of 5 m above the ground. Taking g = 10 m s−2, calculate:
- the potential energy possessed by the ball when it is initially at rest.
- the kinetic energy of the ball just before it hits the ground?
Name the device which converts electrical energy into mechanical energy.
Name the energy transfers which occur when : there is a picture on a television screen
Which one of the following is not the unit of energy?
An object is falling freely from a height x. After it has fallen a height `pi/2` , it will possess :
How much energy does a 100 W electric bulb transfer in 1 minute?
The device which converts mechanical energy into energy which runs our microwave oven is :
In the case of negative work, the angle between the force and displacement is
