Self Studies

Laws of Motion ...

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  • Question 1
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    If the surfaces shown in figure are friction less, the ratio of T1 and T2 is _________________

  • Question 2
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    Three masses 1 kg, 6 kg and 3 kg are connected to each other with threads and are placed on a table as shown in figure. The acceleration with which the system is moving is _________ ms–2 (g = 10 ms–2)

  • Question 3
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    A rope which can withstand a maximum tension of 400 N hangs from a tree. If a monkey of mass 30 kg climbs on the rope in which of the following cases-will the rope break? (take g = 10 ms–2 and neglect the mass of rope)

  • Question 4
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    An object of mass 3 kg is moving with a velocity of 5 m/s along a straight path. If a force of 12 N is applied for 3 sec on the object in a perpendicular to its direction of motion. The magnitude of velocity of the particle at the end of 3 sec is

  • Question 5
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    Same forces act on two bodies of different mass 2 kg and 5 kg initially at rest. The ratio of times required to acquire same final velocity is ___________

  • Question 6
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  • Question 7
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    A Block of mass 300 kg is set into motion on a friction less horizontal surface with the help of friction less pulley and a rope system as shown in figure. What horizontal force F should be applied to produce in the block an acceleration of 1 ms–2?

  • Question 8
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    A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is . If the body is Pulled by a force P as shown in figure, the limiting friction between body and surface will be

  • Question 9
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    Three blocks A , B, and C of equal mass m are placed one over the other, one on a smooth horizontal ground as shown in figure. Coefficient of friction between any two blocks of A, B and C is 0.5. What would be the maximum value of mass of block D so that the blocks A, B and C move without slipping over each other ?

  • Question 10
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    A train is moving along a horizontal track. A pendulum suspended from the roof makes an angle of 4o with the vertical, The acceleration of the train is __________ ms–2 (g = 10 ms–2)

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