Q1 · easy · AI-verified
A body is said to be in rotational equilibrium when the net torque acting on it is:
- Zero
- Equal to its angular velocity
- Maximum
- Equal to its moment of inertia
Q2 · hard · AI-verified
A solid sphere of mass 2 kg and radius 0.1 m rolls without slipping on a horizontal surface with a velocity of 5 m/s. What is the total kinetic energy of the sphere?
- 50 J
- 35 J
- 25 J
- 30 J
Q3 · medium · AI-verified
A projectile is fired at an angle of 45° with the horizontal. The ratio of its horizontal range to maximum height reached is:
- 4 : 1
- 2 : 1
- 1 : 2
- 1 : 4
Q4 · medium · AI-verified
A body of mass 2 kg moving with velocity 3 m/s collides with a stationary body of mass 1 kg and sticks to it (perfectly inelastic collision). The velocity of the combined system after collision is:
- 1.5 m/s
- 1 m/s
- 3 m/s
- 2 m/s
Q5 · medium · AI-verified
A particle moves in a circle of radius 2 m with a constant speed of 4 m/s. The magnitude of its centripetal acceleration is:
- 4 m/s²
- 16 m/s²
- 8 m/s²
- 2 m/s²