Laws of Motion

Related Questions

• A lift is moving downwards with an acceleration equal to acceleration due to gravity. A body of mass m kept on the floor of the lift is pulled horizontally. If the coefficient of friction is $\mu$, then the frictional resistance offered by the body is

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• A man weighing 80 kg is standing in a trolley weighing 320 kg. The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley with a speed of 1 m / s, then after 4 sec his displacement relative to the ground will be

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• A man is at rest in the middle of a pond on perfectly smooth ice. He can get himself to the shore by making use of Newton's

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• A rocket has an initial mass of $20 \times {10^3}\,kg$. If it is to blast off with an initial acceleration of $4\,m{s^{ - 2}}$, the initial thrust needed is $(g\tilde = 10\,m{s^{ - 2}})$

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• In doubling the mass and acceleration of the mass, the force acting on the mass with respect to the previous value

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