Laws of Motion questions
1031 published questions with worked solutions.
- The centripetal acceleration of a particle varies inversely with the square of the radius r of the circular path. The kinetic...
- The kinetic energy k of a particle moving along a circle of radius R depends upon the distance s as k = as². The force acting on...
- A particle moves on a rough horizontal ground with some initial velocity v₀. If 3/4th of its kinetic energy is lost in friction...
- It is easier to draw a wooden block along an inclined plane than to haul it vertically, principally because
- A cylinder of mass 10 kg is sliding on a plane with an initial velocity of 10 m/s. If the coefficient of friction between the...
- A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle; the...
- Natural length of a spring is 60 cm, and its spring constant is 4000 N/m. A mass of 20 kg is hung from it. The extension produced...
- A mass of M kg is suspended by a weightless string. The horizontal force that is required to displace it until the string makes...
- Statement 1: A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between...
- Statement 1: The rate of change of total momentum of a many-particle system is proportional to the sum of the internal forces of...
- When a body moves with some friction on a surface
- A cricket ball of mass 180 g moving with a speed of 108 km/hr hits at the middle of the bat, held firmly at its position by the...
- The upper half of an inclined plane with inclination 14° is perfectly smooth while the lower half is rough. A body starting from...
- Three weights w,2w and 3w are connected to identical springs suspended from a rigid horizontal rod. The assembly of the rod and...
- Two identical trains P and Q move with equal speeds on parallel tracks along the equator. P moves from east to west and Q moves...
- In the above question, find the apparent weight of the object.
- The earth (mass =10^ 24 kg) revolves round the Sun with an angular velocity 2 10^ -7 rad s ^ -1 in a circular orbit of radius 1.5...
- A satellite of the earth is revolving in a circular orbit with a uniform speed v. If the gravitational force suddenly disappears,...
- The mass of the moon is about 1.2 % of the mass of the earth. Compared to the gravitational force the earth exerts on the moon,...
- A spring of constant k is cut into parts of length ratio 1:2. The spring constant of the larger part is
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