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A particle is released from a height S. At certain height its kinetic energy is three times its potential energy. The height and speed of particle at that instant are respectively.​ A particle is released from a height S. At certain height its kinetic energy is three times its potential energy. The height and speed [...]

A ball of mass m is dropped from a height h on a platform fixed at the top of a vertical spring as shown in figure. The platform is depressed by a distance x. The spring constant is (Take acceleration due to gravity =g): A particle of mass 'm' at rest is acted upon by [...]

A stone is projected vertically up to reach maximum height h. The ratio of its kinetic energy to its potential energy at a height 4/5h, will be A stone is projected vertically up to reach maximum height h. The ratio of its kinetic energy to its potential energy at a height 4/5h will be October [...]

A stone of mass 2 kg is projected upwards with KE of 98 J. The height at which the KE of the body becomes half its original value, is given by (take, g=9.8ms^−2) A stone of mass 2 kg is projected upwards with KE of 98 J. The height at which the KE of the [...]

An engine running at speed v/10 sounds a whistle of frequency 600 Hz. A passenger in a train coming from the opposite side at speed of v/15 experiences this whistle to be of frequency f. If v is speed of sound in air and there is no wind. F is nearest to The graph shows [...]

A body at mass 1 kg falls from rest through a distance of 200 m and acquires a speed of 50 m/s. Work done against friction of air is A body at mass 1 kg falls from rest through a distance of 200 m and acquires a speed of 50 m/s. Work done against friction [...]

A2 g ball of glass is released from the edge of a hemispherical cup whose radius is 20 cm . What is the sped of the ball when its reaches the bottom of the cup? A2 g ball of glass is released from the edge of a hemispherical cup whose radius is 20 cm . [...]

A particle us released from a height H. At certain height its kinetic energy is two times its potential energy. Height and speed of particle at that instant are A particle us released from a height H. At certain height its kinetic energy is two times its potential energy. Height and speed of particle at [...]

A girl in a swing is 2.5 m above ground at the maximum height and at 1.5 m above the ground at the lowest point. Her maximum velocity in the swing is (g=10ms^−2 ) A girl in a swing is 2.5 m above ground at the maximum height and at 1.5 m above the ground [...]

The graph shows a wave at t=0 travelling to the right with a velocity of 4m/s. The equation that best represents the wave is The graph shows a wave at t=0 travelling to the right with a velocity of 4m/s. The equation that best represents the wave is October 28, 2020 Category: Cengage JEE Mains [...]