Advertisements
Advertisements
प्रश्न
What type of energy is possessed : by the stretched rubber strings of a catapult?
Advertisements
उत्तर
The stretched rubber string of a catapult possesses potential energy, as the work done to change the shape of the rubber string is stored in it.
APPEARS IN
संबंधित प्रश्न
A body falls freely under gravity from rest. Name the kind of energy it will possess while falling.
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.
What kind of energy is possessed by the following?
Water stored in the reservoir of a dam __________.
Fill in the blank with suitable word :
The sum of the potential and kinetic energies of a body is called __________ energy.
Two bodies having equal masses are moving with uniform speeds of v and 2v respectively. Find the ratio of their kinetic energies.
What is the difference between potential energy and kinetic energy?
Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.
Write the energy transformations which take place in an electric bulb (or electric lamp).
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
How much energy does a 100 W electric bulb transfer in 1 minute?
