Chapter 3 – Laws of Motion

Three identical blocks of masses m=2kg are drawn by a force F=10.2N with an acceleration of 0.6ms^−2 on a frictionless surface, then what is the tension (in N) in the string between the blocks B and C? then what is the tension (in N) in the string between the blocks B and C? Three identical [...]

The minimum velocity (in ms^(-1))` with which a car driver must traverse a flat curve of radius 150m and coefficient of friction 0.6 to avoid skidding is The minimum velocity (in ms^(-1))` with which a car driver must traverse a flat curve of radius 150m and coefficient of friction 0.6 to avoid skidding is October [...]

A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the former one. Then the true statement about the scale reading is A light spring balance hangs from the hook of the other light spring balance and a block of mass M [...]

Consider the following two statements: A. Linear momentum of a system of particles is zero. B. Kinetic energy of a system of particles is zero. Then, Consider the following two statements: A. Linear momentum of a system of particles is zero. B. Kinetic energy of a system of particles is zero. Then October 27, 2020 [...]

A marble block of mass 2 kg lying on ice when given a velocity of 6m/s is stopped by friction in 10s. Then the coefficient of friction is A marble block of mass 2 kg lying on ice when given a velocity of 6m/s is stopped by friction in 10s. Then the coefficient of friction [...]

Two masses m1=5kg and m2=4.8kg tied to a string are hanging over a light frictionless pulley. What is the acceleration of the masses when left free to move? (g = 9.8m/s^2) Two masses m1=5kg and m2=4.8kg tied to a string are hanging over a light frictionless pulley. What is the acceleration of the masses when [...]

An annular ring with inner and outer radii R1 and R2 is rolling without slipping with a uniform angular speed. The ratio of the forces experienced by the two particles situated on the inner and outer parts of the ring, F1/F2 is A body of mass m=10−2kg is moving in a medium and experiences a [...]

A particle of mass 0.3 kg subject to a force F=−kx with k=15N/m. What will be its initial acceleration if it is released from a point 20cm away from the origin? A particle of mass 0.3 kg subject to a force F=−kx with k=15N/m. What will be its initial acceleration if it is released from [...]

A mass of M kg is suspended by a weightless string. The horizontal force that is required to displace it until the string makes an angle of 45^∘ with the initial vertical direction is A mass of M kg is suspended by a weightless string. The horizontal force that is required to displace it until [...]

Given in figure are two blocks A and B of weight 20N and 100N, respectively. These are being pressed against a wall by a force F as shown. If the coefficient of friction between the blocks is 0.1 and between block B and the wall is 0.15, the frictional force applied by the wall on [...]