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प्रश्न
Gravitational potential energy U = mass × force of gravity on unit mass × ..........
उत्तर
Gravitational potential energy U = mass × force of gravity on unit mass × height.
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संबंधित प्रश्न
State two factors on which the potential energy of a body at a certain height above the ground depends.
Write the expression for the gravitational potential energy explaining the meaning of the symbols used.
A body of mass m is moved from ground to a height h. If the force of gravity on mass of 1 kg is g newton, find the force needed to lift the body.
A body of mass m is moved from ground to a height h. If force of gravity on mass of 1 kg is g newton, find the potential energy stored in the body.
What happens to the potential energy of a body when its height is doubled?
A weightlifter is lifting weights of mass 200 kg up to a height of 2 metres. If g = 9.8 m s−2, calculate :
potential energy acquired by the weights.
To what height should a box of mass 150 kg be lifted, so that its potential energy may become 7350 joules? (g = 9.8 m/s2)
Explain by an example what is meant by potential energy. Write down the expression for gravitational potential energy of a body of mass m placed at a height h above the surface of the earth.
Potential energy and heat energy are the two forms of mechanical energy.
The potential energy is
