Work, Energy and Power

Related Questions

• A body of mass 5 kg is placed at the origin, and can move only on the x-axis. A force of 10 N is acting on it in a direction making an angle of ${60^o}$ with the x-axis and displaces it along the x-axis by 4 metres. The work done by the force is

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• Two bodies of masses m and 2m have same momentum. Their respective kinetic energies ${E_1}$ and ${E_2}$ are in the ratio

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• A force acts on a 30 gm particle in such a way that the position of the particle as a function of time is given by $x = 3t - 4{t^2} + {t^3}$, where x is in metres and t is in seconds. The work done during the first 4 seconds is

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• The potential energy of a body is given by, U =$A - B{x^2}$(Where x is the displacement). The magnitude of force acting on the particle is

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• A 4 kg mass and a 1 kg mass are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta is

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