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प्रश्न
Write the type of energy possessed in the following case:
A bent bow
उत्तर
Potential Energy
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संबंधित प्रश्न
Select the correct alternatives
A ball rolling on the ground possesses
Name the type of energy (kinetic or potential) possessed by the following:
A stone at rest on the top of a building.
What is hydro energy?
Renewable source of energy is:
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s-2)
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
Give three examples of bodies possessing kinetic energy.
State the energy changes which take place when:
Water freezes in the freezing chamber of a fridge.
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
A ball of mass 50 g falls from a height of 2m and rebounds from the ground to 1.6 m. Find:
(i) The potential energy possessed by the ball when initially at rest.
(ii) The kinetic energy of the ball before it hits the ground.
(iii) The final potential energy of the ball.
(iv) The loss in kinetic energy of the ball on collision. (Take: g = 10N kg−1)
