Two smooth inclined planes are shown in the figure. On these, two… - Vidyadip

Question

Two smooth inclined planes are shown in the figure. On these, two objects $A$ and $B$ of equal masses start sliding from rest from point $P$. Which object will reach the ground with greater speed?

✓

Answer

Increase in kinetic energy
$=$ Lose of potential energy
or
$\frac{1}{2} m v^2=m g h$
$\therefore \quad v=\sqrt{2 g h}$
$\because$ Both the balls/objects falls from the same height so both the objects will reach on the earth with same speed.

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