Physics-
General
Easy
Question
A particle is moving along an elliptical path with constant speed. As it moves from A to B, magnitude of its acceleration
- continuously increases
- continuously decreases
- Remains constant
- first increases and then decreases
The correct answer is: Remains constant
The horizontal component of velocity of sand just before falling on the cart is vS = 0.
The horizontal speed of cart = vC (constant). The rate of mass falling on cart = µ (constant)
The rate of mass falling on cart = µ (constant).
Horizontal force exerted by falling sand on cart = µ 
= µ (vc – vs ) = µ vc
µ and vc are constant, the horizontal force is constant.
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Physics-General
