- [Medium]A 10 kg block is pressed against a vertical wall by a horizontal force, and the coefficient of static friction between block and wall is 0.5. Taking g...
- [Medium]On a rough horizontal table a 4 kg block is pulled by a light string connected over a frictionless pulley to a hanging 2 kg block. If the coefficient ...
- [Medium]A curved highway of radius 80 m is banked so that vehicles can negotiate it without relying on friction. If the safe speed for this frictionless banki...
- [Medium]Two blocks of masses 2 kg and 3 kg are placed in contact on a smooth horizontal floor, and a horizontal force of 20 N pushes on the 2 kg block so both...
- [Medium]A stone of mass 0.5 kg tied to a string is whirled in a horizontal circle of radius 1 m at a constant speed of 4 m/s. What is the tension in the strin...
- [Medium]A small bob hangs by a thread from the roof of a railway carriage that accelerates horizontally at 5 m/s^2. As seen by a passenger inside, the thread ...
- [Medium]A stationary 5 kg gun fires a 0.02 kg bullet that leaves the muzzle at 250 m/s. Assuming no external horizontal force acts during firing, what is the ...
- [Medium]Two blocks of masses 3 kg and 5 kg hang from the two ends of a light inextensible string passing over a frictionless pulley in an Atwood arrangement. ...
- [Medium]A person of mass 60 kg stands on a weighing scale inside an elevator that accelerates upward at 2 m/s^2. Taking g as 10 m/s^2, what reading in newtons...
- [Medium]A block slides down a rough incline tilted at 30 degrees to the horizontal where the coefficient of kinetic friction between block and surface is 0.2....
- [Easy]A hockey puck of mass 0.16 kg resting on smooth ice is struck so that it gains a steady acceleration of 25 m/s^2. What is the magnitude of the net for...
- [Easy]A passenger standing in a bus suddenly lurches backward the moment the stationary bus begins to move forward. Which principle best explains this every...
- [Easy]Three coplanar forces act simultaneously at a single point and hold a small ring in equilibrium. If two of the forces are 6 N pointing east and 8 N po...
- [Easy]A heavy wooden crate rests on a rough floor and a person gradually increases a horizontal push on it, yet the crate stays still until the push becomes...
- [Easy]A cricket ball of mass 0.15 kg approaches a bat at 20 m/s and rebounds straight back along the same line at 20 m/s after contact. What is the magnitud...
- [Easy]While swimming forward, a person pushes the water backward with their hands and feet during each stroke. Identify the correct action-reaction interpre...
- [Hard]A block of mass 3 kg is pushed against a vertical wall by a horizontal force of 50 N. If the coefficient of static friction is 0.6, what is the static...
- [Hard]A stone of mass 0.5 kg tied to a string of length 1 m is whirled in a horizontal circle at 2 revolutions per second. What is the centripetal force?...
- [Medium]A man of mass 70 kg stands in an elevator accelerating upward at 2 m/s². What is the normal force exerted by the floor on the man? (g = 10 m/s²)...
- [Medium]A block slides down a rough inclined plane of angle 45° with constant velocity. What is the coefficient of kinetic friction?...
- [Medium]A car moves on a circular banked road of radius 100 m with a speed of 20 m/s. What should be the angle of banking if no friction is required? (g = 10 ...
- [Medium]A body of mass 2 kg moving with a velocity of 10 m/s collides with another body of mass 3 kg at rest. If they stick together after collision, what is ...
- [Medium]Two blocks of masses 3 kg and 2 kg are connected by a string passing over a frictionless pulley. What is the acceleration of the system? (g = 10 m/s²)...
- [Easy]A block of mass 5 kg is placed on a rough horizontal surface. The coefficient of static friction is 0.4. What is the maximum static friction force? (g...
- [Easy]A force of 20 N acts on a body of mass 4 kg initially at rest. What will be its velocity after 5 seconds?...
- [Easy]A block of mass 2 kg is placed on a frictionless horizontal surface. If no external force acts on it, what can be said about its motion?...
- [Hard]Two blocks m1=2 kg (on table, μ=0.2) and m2=3 kg hanging. Acceleration (g=10 m/s²)?...
- [Easy]Which statement best expresses Newton's First Law?...
- [Easy]A 10 kg block on frictionless surface is pulled by 40 N. Acceleration is:...
- [Medium]A 5 kg block rests (μ_s = 0.4). Minimum horizontal force to start motion? (g=10 m/s²)...
- [Easy]When you push a wall and it does not move, which is true?...
- [Medium]In an Atwood machine m1 = 6 kg, m2 = 5 kg. Acceleration is (g = 10 m/s²):...
- [Easy]Kinetic friction does negative work because it:...
- [Medium]Frame accelerates right with acceleration a. Pseudo force on mass m appears as:...
- [Easy]Ball of mass 0.2 kg moving at 30 m/s is stopped in 0.05 s. Average force is:...
- [Medium]Car (1000 kg) brakes on level road (μ=0.5) from 20 m/s. Minimum stopping distance (g=10 m/s²) is:...
- [Easy]Rocket propulsion primarily relies on conservation of:...
- [Easy]Net work done on an object equals change in:...
- [Medium]In an isolated system with internal impulsive forces, which is conserved?...
- [Easy]Which statement about static friction is true?...
- [Medium]Passenger in accelerating car feels pushed back due to:...
- [Easy]A block of mass 10 kg is placed on a rough horizontal surface having a coefficient of friction µ = 0.5. If a horizontal force of 100 N is applied on i...
- [Easy]In the system shown, the pulley and string are ideal. If the acceleration of block A (mass m) is a upwards, find the acceleration of block B (mass 2m)...