Laws of Motion

Related Questions

• Which one of the following is not used to reduce friction

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• Two balls of masses ${m_1}$ and ${m_2}$ are separated from each other by a powder charge placed between them. The whole system is at rest on the ground. Suddenly the powder charge explodes and masses are pushed apart. The mass ${m_1}$ travels a distance ${s_1}$ and stops. If the coefficients of friction between the balls and ground are same, the mass ${m_2}$ stops after travelling the distance

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• Mass of a person sitting in a lift is 50 kg. If lift is coming down with a constant acceleration of 10 $m/se{c^2}.$ Then the reading of spring balance will be $(g = 10m/se{c^2})$

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• At a place where the acceleration due to gravity is $10\,m\,{\sec ^{ - 2}}$ a force of 5 kg-wt acts on a body of mass 10 kg initially at rest. The velocity of the body after 4 second is

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• A body B lies on a smooth horizontal table and another body A is placed on B. The coefficient of friction between A and B is $\mu $. What acceleration given to B will cause slipping to occur between A and B

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