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A stone is thrown upwards as shown in the diagram. When it reaches point $P$ , which of the following has the greatest value for the stone?

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Its acceleration

Its kinetic energy

Its potential energy

Its weight

answer is C.

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Detailed Solution

When it reaches the point

P

, its potential energy has the greatest value for the stone.
As we know, potential energy is defined as the product of the mass

m

of the object, acceleration due to gravity

g

and height

h

travelled by the body.
The mathematical expression for potential energy is,

\Rightarrow P . E . = mgh

Where

m, g,

and

h

represents the mass, gravitational acceleration and height respectively.
From the figure, at point

P

, the stone is at its highest point with zero velocity. Thus, when the stone reaches the point

P

, potential energy has the greatest value.

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