Laws of Motion questions
1031 published questions with worked solutions.
- An elevator and its load have a total mass of 800 kg. The elevator is originally moving downward at 10 ms⁻¹; it slows down to...
- A heavy uniform chain lies on a horizontal table top. If the coefficient of friction between the chain and the table surface is...
- A car starts from rest to cover a distance s. The coefficient of friction between the road and the tyres is μ. The minimum time...
- A chain lies on a rough horizontal table. It starts sliding when one-fourth of its length hangs over the edge of the table. The...
- A machine gun fires n bullets per second, each of mass m, with velocity u. The force of recoil is
- An open carriage in a goods train is moving with a uniform velocity of 10 ms⁻¹. If the rain adds water with zero velocity at the...
- The engine of a car produces an acceleration of 6 ms⁻² in the car. If this car pulls another car of the same mass, then the...
- Three blocks A, B and C, each of mass m, hang over three separate frictionless, massless pulleys. In case (1), block A is pulled...
- A man wants to slide down a rope. The breaking load for the rope is 2/3 rd of the weight of the man. With what minimum...
- A block is gently placed on a conveyor belt moving horizontally with constant speed. After 4 s, the velocity of the block becomes...
- A 40 kg slab rests on a frictionless floor. A 10 kg block rests on top of the slab. The static coefficient of friction between...
- A body of mass 40 kg resting on a rough horizontal surface is subjected to a force P which is just enough to start the motion of...
- A block of mass 1 kg is at rest on a horizontal table. The coefficient of static friction between the block and the table is 0.5....
- A box of mass m kg is placed on the rear side of an open truck accelerating at a ms⁻². The coefficient of friction between the...
- A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. Force P is applied at one end of the...
- Observer O₁ is in a lift going upwards and O₂ is standing on the ground. Both apply Newton's laws correctly (including any...
- A block of mass m lying on a rough horizontal plane is acted upon by a horizontal force P and another force Q inclined at an...
- The linear momentum of a particle varies with time t as p = a + bt + ct². Which of the following statements is correct?
- The normal reaction on a body placed in a lift moving up with constant acceleration 2 ms⁻² is 120 N. The mass of the body is...
- A 1000 kg lift is supported by a cable that can support 2000 kg. The shortest distance in which the lift can be stopped when it...
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