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Two weights w1 and w2 are suspended from the ends of a light string passing over a smooth fixed pulley. If the pulley is pulled up at an acceleration g, the tension in the suspension of pulley is,

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Important Questions on Newton's Laws of Motion

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An uniform rope of length L and mass M is placed on a smooth fixed wedge as shown in the figure. Both ends of the rope are at the same horizontal level. If the rope is initially released from rest, then the magnitude and the initial acceleration of the rope is

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A light string passing over a smooth light pulley connects two blocks of masses m1 and m2 (vertically). If the acceleration of the system is g8, then the ratio of the masses is
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One end of the massless rope which passes over a massless and frictionless pulley P is tied to a hook C while the other end is free. The maximum tension that the rope can bear is 360 N. With what value of minimum safe acceleration in m s-2 can a man of 60 kg climb down the rope? (Assume acceleration due to gravity g=10 m s-2.)

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In the figure, the blocks AB and C each of mass m have acceleration a1a2 and a3, respectively. F1 and F2 are external forces of magnitudes 2mg and mg, respectively. Then

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If masses are released from the position shown in the figure, then the speed of mass m1 just before its collision with the floor will be

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Three blocks with masses m2m and 3m are connected by strings as shown in the figure. After an upward force F is applied on block m, the masses move upward at a constant speed v. What is the net force on the block of mass 2m? (g is the acceleration due to gravity)

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Two masses of 5 kg and 10 kg are connected to a pulley as shown in the figure. What will be the acceleration if the pulley is set free? (g= acceleration due to gravity) (Assume that the pulley is an ideal and ideal string as well)

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Two bodies of 5 kg and 4 kg are tied to a string as shown in the figure. If the table and the pulley both are smooth, then the acceleration of 5 kg body will be equal to

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