Newton's Laws Of Motion Practice Level -1 - Class 11 MCQ

A mass M is suspended by a rope from a rigid supportat A as shown in figure. Another rope is tied at the end B and it is pulled horizontally with a force F. If the ropeAB makes an angle θ with the vertical, then the tensionin the string AB is

Two bodies of masses 4 kg and 6 kg are attached onthe ends of a string passing over a pulley. The 4 kgmass is attached to the table top by another string.The tension in this string T₁ is equal to (take g = 10 ms^-2)

In the following figure, the pulley P₁ is fixed and thepulley P₂ is movable. If W₁ = W₂ = 100 N, what is theangle AP₂P₁? The pulleys are frictionless and assumeequilibrium.

A man sits on a chair supported by a rope passing overa frictionless fixed pulley. The man who weighs 1000 Nexerts a force of 450 N on the chair downwards whilepulling the rope on the other side. If the chair weighs250 N, then the acceleration of the chair is

Three forces are acting on a particle of mass m initiallyin equilibrium. If the first two forces (R₁ and R₂) areperpendicular to each other and suddenly the third force (R₃) is removed, then the acceleration of the particle is

A body of mass 2 kg has an initial velocity of 3 ms-1along OE and it is subjected to a force of 4 N in adirection perpendicular to OE. The distance of bodyfrom O after 4 s will be

In order to raise a mass of 100 kg, a man of mass 60kg fastens a rope to it and passes the rope over a smooth pulley. He climbs the rope with acceleration 5g/4 relative to the rope. the tension in the rope is (takeg =10 ms^-2)

A plumb bob is hung from the ceiling of a traincompartment. The train moves on an inclined track ofinclination 30⁰ with horizontal. Acceleration of train upthe plane is a = g/2. The angle which the string supportngthe bob makes with normal to the ceiling in equilibrium is

A balloobn of mass M is descending at a constant acceleration α . When a mass m is released from the balloon, it starts rising with the same acceleration α .Assuming that its volume does not change, what is thevalue of m?

Two wooden blocks are moving on a smooth horizontal surface such that the mass m remains stationary with respect to block of mass M as shown in the figure. The magnitude of force P is

An inclined plane makes an angle 30⁰ with thehorizontal. A groove (OA) of length = 5 m cut in theplane makes an angle 30⁰ with OX. A short smoothcylinder is free to slide down under the influence ofgravity. The time taken by the cylinder to reach from Ato O is (g = 10 ms^-2)

A man is raising himself and the crate on which hestands with an acceleration of 5 ms^-2 by a masslessrope and pulley arrangement. Mass of the man is 100kg and that of the crate is 50kg. If g = 10 ms^-2, then thetension in the rope is

Blocks A and C start from rest and move to the rightwith acceleration a_A = 12 t ms^-2 and a_C = 3 ms^-2. Heret is in seconds. The time when block B again comes torest is

In the given firgure, the mass m₂ starts with velocity v₀ and moves with constant velocity on the surface. Duringmotion the normal reaction between the horizontalsurface and fixed triangle block m₁ is N. Then duringmotion.

In the figure shown, blocks A and B move with velocitiesv₁ and v₂ along horizontal direction. Find the ratio of v₁/v₂

If block B moves towards right with acceleration b, find the net acceleration of block A.

If the blocks A and B are moving towards each other with acceleration a and b as shown in the figure, find the net acceleration of block C.