Laws of Motion questions
1031 published questions with worked solutions.
- A string breaks if its tension exceeds 10 newtons. A stone of mass 250 gm tied to this string of length 10 cm is rotated in a...
- A body of mass 1 kg tied to one end of a string is revolved in a horizontal circle of radius 0.1 m with a speed of 3...
- An aeroplane is flying with a uniform speed of 100 m/s along a circular path of radius 100 m. The angular speed of the aeroplane...
- For a particle in uniform circular motion, the acceleration a at a point P(R, ) on the circle of radius R is (here is measured...
- A motorcyclist moving with a velocity of 72 km/hour on a flat road takes a turn at a point where the radius of curvature of the...
- If the body is moving in a circle of radius r with a constant speed v, its angular velocity is
- Centripetal acceleration is
- Find the maximum velocity for skidding for a car moved on a circular track of radius 100 m. The coefficient of friction between...
- A ball of mass 0.1 kg is whirled in a horizontal circle of radius 1 m by means of a string at an initial speed of 10 r.p.m....
- A body is whirled in a horizontal circle of radius 20 cm. It has an angular velocity of 10 rad/s. What is its linear velocity at...
- The maximum speed of a car on a road-turn of radius 30 m, if the coefficient of friction between the tyres and the road is 0.4,...
- What is the angular velocity of the earth (about its own axis)?
- A boy on a cycle pedals around a circle of 20 metres radius at a speed of 20 metres/sec. The combined mass of the boy and the...
- The second's hand of a watch has length 6 cm. The speed of its end point and the magnitude of the difference of velocities at two...
- A 500 kg crane takes a turn of radius 50 m with a velocity of 36 km/hr. The centripetal force is
- The magnitude of the centripetal force acting on a body of mass m executing uniform motion in a circle of radius r with speed v is
- A stone of mass 16 kg is attached to a string 144 m long and is whirled in a horizontal circle. The maximum tension the string...
- An unbanked curve has a radius of 60 m. The maximum speed at which a car can make a turn if the coefficient of static friction is...
- A bob of mass 10 kg is attached to a wire 0.3 m long. Its breaking stress is 4.8 10^7 N/m². The area of cross-section of the wire...
- A particle is moving on a circular path with constant speed; its acceleration will be
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