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An object of mass 1 kg has potential energy of 1 joule relative to the ground when it is at a height of _______. 
  • a)
    0.102 m
  • b)
    1 m
  • c)
    9.8 m
  • d)
    32 m
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
An object of mass 1 kg has potential energy of 1 joule relative to the...
Given, mass of the object, m = 1 kg
Potential energy, PE = 1 J

To find the height of the object, we can use the formula for potential energy:

PE = mgh

Where,
g = acceleration due to gravity = 9.8 m/s^2 (approx.)
h = height of the object

Let's substitute the given values in the above formula:

1 J = (1 kg) × (9.8 m/s^2) × h

Solving for h, we get:

h = 1 J / (1 kg × 9.8 m/s^2)

h = 0.102 m

Therefore, the object has a potential energy of 1 joule relative to the ground when it is at a height of 0.102 m.
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Community Answer
An object of mass 1 kg has potential energy of 1 joule relative to the...
Here P E = mgh
1 joule = 1 kg × 9.8 m/s × h
h = 1/9.8 = 0.10121 = 0.102 m
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