derive the expression for potential energy
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7
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PE of an object of mass m kept at a height h is mgh.
Actually, the work done to lift this object against gravity to take it to a height h is stored (converted) as PE of this object.
The work done = Force*distance
=Mass*acceleration*distance
=m*g*h
=mgh
therefore, PE=mgh
==========================
PE of an object of mass m kept at a height h is mgh.
Actually, the work done to lift this object against gravity to take it to a height h is stored (converted) as PE of this object.
The work done = Force*distance
=Mass*acceleration*distance
=m*g*h
=mgh
therefore, PE=mgh
==========================
Answered by
2
work=force ×displacement
in vertical direction force is gravitational force vertically downward i.e. mg
let the displacement be h
so work done (potential energy)=mgh
in vertical direction force is gravitational force vertically downward i.e. mg
let the displacement be h
so work done (potential energy)=mgh
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