Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear momenta is
Options
(a) 1:2 (b) 1:1 (c) 4:1 (d) 1:4
Correct Answer:
1:2
Explanation: […]
A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass 16g. If the trigger is pulled,the velocity of the ball is
Options
(a) 50 ms⁻¹ (b) […]
When a mass M is attached to the spring of force constant k, then the spring stretches by l. If the mass oscillates with amplitude l, what will be the maximum potential energy stored in […]
The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretched by 8 cm the potential energy stored in it is
Options
(a) U/4 (b) […]
A stationary particle explodes into two particles of masses m₁ and m₂ which move in opposite directions with velocities v₁ and v₂. The ratio of their kinetic energy is
Options
(a) m₂/m₁ (b) […]
Match the following columns Column i Column ii A. Inelastic collision Kinetic energy of the system may decrease B. Elastic collisions Kinetic energy of the system may increase C. Total work done is zero kinetic […]
For inelastic collision between two spherical rigid bodies
Options
(a) the total kinetic energy is conserved (b) the total mechanical energy is not conserved (c) the linear momentum is not conserved (d) the linear […]
A ball of mass 2 kg and another of mass 4 kg are dropped together from a 60 ft tall building. After a fall of 30 ft each towards the earth,their respective kinetic energies will […]
Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂ .On collision, one of the particle s get excited to higher level, after absorbing energy E.If final velocities of particles be v₁ […]
A particle A suffers on oblique elastic collision with a particle B that is at rest initially.If their masses are the same, then after the collision 1. their KE may be equal 2. A continues […]
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