A spring of spring constant 5 x 10³ N/m is stretched initially by 5 cm
A spring of spring constant 5 x 10³ N/m is stretched initially by 5 cm from the unstretched position. The…
7 years ago
Work Energy and Power
Two bodies of mass 0.25 kg each moving towards each other with velocity
Two bodies of mass 0.25 kg each moving towards each other with velocity 3 m/s and 1 m/s respectively. After…
7 years ago
A bullet of mass 0.05 kg moving with a speed of 80 m/s enters a wooden
A bullet of mass 0.05 kg moving with a speed of 80 m/s enters a wooden block and is stopped…
7 years ago
A body A experiences perfectly elastic collision with a stationary body B
A body A experiences perfectly elastic collision with a stationary body B. If after collision the bodies fly apart in…
7 years ago
In stretching a spring by 2 cm, energy stored is given by U. Had is been stretched
In stretching a spring by 2 cm, energy stored is given by U. Had is been stretched by 10 cm,…
7 years ago
The potential energy of a system increases if work is done
The potential energy of a system increases if work is done Options (a) upon the system by a non conservative…
7 years ago
300j work is done in sliding a 2kg block up an inclined plane of height 10m
300j work is done in sliding a 2kg block up an inclined plane of height 10m.Taking g=10 ms⁻², work done…
7 years ago
A circular disc rolls down an inclined plane.The ratio of rotational kinetic energy
A circular disc rolls down an inclined plane. The ratio of rotational kinetic energy to total kinetic energy is Options…
7 years ago
The momentum of a body is increased by 20%.The percentage increases in kinetic energy
The momentum of a body is increased by 20%.The percentage increases in kinetic energy is Options (a) 54 % (b)…
7 years ago
A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle
A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle as compared to that of…
7 years ago