Laws of Motion — Previous-Year Questions

Q1. A 2 kg object accelerates at 5 m/s². Net force:

Q1. A body of mass 5 kg is in a lift accelerating upward at 2 m/s². The apparent weight is:

Q2. In an Atwood machine with masses 3 kg and 5 kg, the acceleration is (g = 10 m/s²):

Q3. Three blocks of masses 1, 2, and 3 kg are connected and pulled with 12 N. Tension between 2 kg and 3 kg:

Q4. A person weighing 60 kg stands in a lift. If the cable breaks, apparent weight is:

Q5. A 10 kg block on a frictionless surface is pulled by 20 N force at 60° above horizontal. Acceleration is:

Q1. A 10 kg block on a surface with μs=0.4. Minimum force to start motion (g=10):

Q1. A block of mass 2 kg is on a rough incline (μ = 0.5, θ = 30°). The friction force is:

Q2. The angle of repose for a body on an inclined plane is 30°. The coefficient of static friction is:

Q3. A body slides down an incline of 45° with acceleration g/2√2. The coefficient of kinetic friction is:

Q4. A 10 kg block is pushed against a wall with force F. If μₛ = 0.4, minimum F to prevent sliding is:

Q5. Two blocks A (2kg) and B (4kg) are on a surface with μ = 0.2. A force F is applied on A. Max F so both move together:

Q1. Incline at 30°, frictionless. Acceleration (g=10):

Q1. Atwood with m₁=2 kg, m₂=3 kg (g=10). Acceleration:

Q1. 60 kg person in elevator accelerating up at 2 m/s². Apparent weight (g=10):

Q1. A block just begins to slide at θ = 30° on an incline. μ_s equals?