Laws of Motion

Related Questions

• A solid disc of mass M is just held in air horizontally by throwing 40 stones per sec vertically upwards to strike the disc each with a velocity 6 $m{s^{ - 1}}$. If the mass of each stone is $0.05kg$ what is the mass of the disc$(g = 10m{s^{ - 2}}$)

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• Consider a car moving on a straight road with a speed of 100 m/s. The distance at which car can be stopped is $[{\mu _k} = 0.5]$

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• A lift of mass 1000 kg is moving with an acceleration of 1 $m/{s^2}$ in upward direction. Tension developed in the string, which is connected to the lift, is

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• There is a simple pendulum hanging from the ceiling of a lift. When the lift is stand still, the time period of the pendulum is T. If the resultant acceleration becomes $g/4,$ then the new time period of the pendulum is

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• A uniform rope of length l lies on a table. If the coefficient of friction is $\mu $, then the maximum length ${l_1}$ of the part of this rope which can overhang from the edge of the table without sliding down is

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