Work, Energy and Power

Related Questions

• If the unit of force and length each be increased by four times, then the unit of energy is increased by

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• The decrease in the potential energy of a ball of mass 20 kg which falls from a height of 50 cm is

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• Two masses of 1 gm and 4 gm are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta is

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• Which one of the following is not a conservative force

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• A machine which is 75 percent efficient, uses 12 joules of energy in lifting up a 1 kg mass through a certain distance. The mass is then allowed to fall through that distance. The velocity at the end of its fall is (in $m{s^{ - 1}})$

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