Question

An object of mass 12kg is at a certain height above the ground. If the potential energy of

the object is 480 J, find the height at which the object is with respect to the ground.

(Given g = 10m/s²)

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Answer 1

Answer:

the object is at a height of 4m

Answer 2

Correct Question :

An object of mass 12kg is at a certain height above the ground. If the potential energy of the object is 480 J, find the height at which the object is with respect to the ground.

(Given g = 10m/s²)

Answer ::

The height of the object is 4m.

Step-by-step explanation ::

To Find :-

• The height of the object

Solution :-

Given that,

• Mass of the object = 12kg
• Potential energy of the object = 480J
• Acceleration due to gravity = 10m/s²

Let us assume the height as h,

As we know that,

Potential energy = mgh

Where,

• m = Mass
• g = Acceleration due to gravity
• h = Height

ACCORDING THE QUESTION,

➟ 12 × 10 × h = 480

➟ 120 × h = 480

➟ h = 480 / 120

➟ h = 48 / 12

➟ h = 4

The height of the object is 4m.

More Information

Some more important concepts related to energy :-

• Potential energy = m × g × h
• Kinetic energy = 1/2 × m × v²
• The S.I. unit of energy is Joule ( J ).
• Potential energy = Work done