Frame of Reference
Trending Questions
Q. A rod of mass M and length L is standing on frictionless horizontal surface vertically. With slight disturbance it starts to fall. When rod is making angle of 37∘ with vertical,
- Speed of center of mass is gL3
- Angular velocity of rod is √15g13L
- Velocity of center of mass is vertically downwards
- Speed of point of contact with ground is √12gL65
Q. A ball of mass 4 kg is moving in 3 dimensional plane and the velocity of ball w.r.t an observer is →V1=−3^i+4^j+5^k and the velocity of observer w.r.t ground is given as →V2=2^i+2^j−4^k. Find out kinetic energy of ball w.r.t ground.
- 100 J
- 38 J
- 76 J
- 19 J