Laws of Motion

Related Questions

• A man of weight 75 kg is standing in an elevator which is moving with an acceleration of $5\,m/{s^2}$ in upward direction the apparent weight of the man will be $(g = 10\,\,m/{s^2})$

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• A satellite in force-free space sweeps stationary interplanetary dust at a rate $dM/dt = \alpha v$ where M is the mass, v is the velocity of the satellite and $\alpha $ is a constant. What is the deacceleration of the satellite

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• A 20 kg block is initially at rest on a rough horizontal surface. A horizontal force of 75 N is required to set the block in motion. After it is in motion, a horizontal force of 60 N is required to keep the block moving with constant speed. The coefficient of static friction is

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• An object with a mass 10 kg moves at a constant velocity of 10 m/sec. A constant force then acts for 4 second on the object and gives it a speed of 2 m/sec in opposite direction, the force acting on the object is

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• A pendulum bob of mass 50 gm is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately

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