Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)

A wind-powered generator converts wind energy into electrical energy. Assume that the generator converts a fixed fraction of the wind energy intercepted by its blades into electrical energy. A wind-powered generator converts wind energy into electrical energy. Assume that the generator converts a fixed fraction of the wind energy intercepted by its blades into electrical [...]

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then the long piece will have a force constant of A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then [...]

A force F = -K (yi + xj) (where K is a positive constant) acts on a particle moving in the x-y plane. Starting from the origin, the particle is taken along the positive x axis to the point (a, 0), 0 ) A force F = -K (yi + xj) (where K is a [...]

Two masses of 1 g and 4 g are moving with equal kinetic energies. The ratio of the magnitudes of their momenta is Two masses of 1 g and 4 g are moving with equal kinetic energies. The ratio of the magnitudes of their momenta is October 5, 2020 Category: Uncategorised (JEE Advanced Physics by [...]

A stone tied to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain instant of time, the stone is at its lowest position, and has a speed u. A stone tied to a string of length l is whirled in [...]

A particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration ac varies with time t as ac = k^2rt^2, where k is a constant. The power delivered A particle of mass m is moving in a circular path of constant radius r such that its [...]

A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to October 5, 2020 [...]

If a machine is lubricated with oil a. The mechanical advantage of the machine increases b. The mechanical efficiency of the machine increases If a machine is lubricated with oil a. The mechanical advantage of the machine increases b. The mechanical efficiency of the machine increases October 5, 2020 Category: Uncategorised (JEE Advanced Physics by [...]

A 2144 kg freight car roles along rails with negligible friction. The car is brought to rest by a combination of two coiled springs as illustrated in Fig. 8.308. Both springs are described by Hooke’s law A man slowly pulls a bucket of water from a well of depth h = 20 m. The mass [...]

A particle of mass 5 kg is free to slide on a smooth ring of radius r = 20 cm fixed in a vertical plane. The particle is attached to one end of a spring whose other end is fixed to the top point O of the ring. A man slowly pulls a bucket of [...]