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Drums of oil are carried in a truck. If the truck accelerates at a constant rate, the surface of the oil in the drum will -

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Important Questions on Laws of Motion

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A body kept on a smooth inclined plane of inclination 1 in x will remain stationary relative to the inclined plane if the plane is given a horizontal acceleration equal to :-
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Two blocks of masses 5 kg and 10 kg are connected to a pulley as shown. What will be their acceleration if the pulley is set free ? (g = acceleration due to gravity)

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Three solids of masses m1, m2 and m3 are connected with weightless string in succession and are placed on a frictionless table. If the mass m3 is dragged with a force T. The tension in the string between m2 and m3 is:-
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Two particles of masses m and M (M>m) are connected by a cord that passes over a massless and frictionless pulley. The tension T in the string and the acceleration a of the particles is:-
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Three blocks of masses m1, m2 and m3 are connected by massless strings as shown in the figure on a frictionless table. They are pulled with a force of 40 N. If m1 = 10 kg, m2 = 6 kg and m3 = 4 kg, then tension T2 will be :-

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Three masses M1, M2 and M3 are lying o n a frictionless table. The masses are connected by massless threads as shown. The mass M3 is pulled by a constant force F as shown. The tension in the thread between masses M2 and M3 is :-

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If a parrot starts flying upwards with an acceleration in an air tight cage, then the boy will feel the weight of the cage:
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Two blocks of masses 2 kg and 1 kg are in contact with each other on a frictionless table. When a horizontal force of 3.0 N is applied to the block of mass 2 kg the value of the force of contact between the two blocks is-