NTA Abhyas JEE Main2020PhysicsLaws of MotionPractice
A person holding a bag starts sliding freely from a point A on a frictionless inclined plane while his bag starts falling down vertically from the same point. The final speeds of the man V M and the bag V B on reaching the ground after falling through the same height should be such that
Options
- AV M < V B
- BV M = V B
- CThey depend on the masses
- DV M > V B
Correct answer
B. V M = V B
Step-by-step solution
As there is only a gravitational field which is a conservative field, the change in kinetic energy of both the objects will be proportional to their masses and their vertical displacements. Hence, their speeds will be only proportional to their vertical displacements. s o , V M = V B