Newton's laws, conservation of linear momentum, equilibrium of concurrent forces, friction, dynamics of circular motion.
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Q1 · Laws of Motion · HARD
Two blocks of masses 2 kg and 3 kg are connected by a string passing over a frictionless pulley. The 2 kg mass is on a horizontal surface with coefficient of kinetic friction 0.2, while the 3 kg mass hangs vertically. The acceleration of the system is: (Take g = 10 m/s²)
Q2 · Laws of Motion · MEDIUM
A block of mass 5 kg is placed on a rough horizontal surface. The coefficient of static friction is 0.4. The minimum force required to just move the block is: (Take g = 10 m/s²)
Q3 · Laws of Motion · EASY
A force of 10 N acts on a body of mass 2 kg for 3 seconds. The change in momentum of the body is: