Question

can any object have mechanical energy even if its momentum is zero. explain

Answer 1

Hello!
Mechanical Energy = Kinetic Energy + Potential Energy .
Momentum = Mass × Velocity.
If Momentum is Zero means Velocity is Zero.
Note :- Mass Can't Be Zero . So Zero Momentum Means Zero Velocity.
So we Know Kinetic Energy =1/2Mv2.
So if V=0, then Kinetic Energy will be Zero.
Now , Potential Energy = Mgh
Means Mass × Gravity × Height .
So it has nothing to do with Velocity.

Thus , If an object has Zero Momentum It's not Necessary that it's Mechanical Energy would Also be Zero Because Potential Energy in that Case would not Be Zero .

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Swapnil11111

Answer 2

Long Answer - Mechanical Engineering is the sum of kinetic energy and potential energy. Zero momentum means zero kinetic energy but you still can still have potential energy with zero momentum like a when you hold a object above the sea level.