Physics
Grade-6
Easy
Question
If a body of mass 2 kg is at a height 10 m, then find gravitational potential energy with respect to earth (g =10 m/s2).
- 90
- 50
- 100
- 200
Hint:
Potential Energy =m×g×h
The correct answer is: 200
For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters
P.E=2kg ×10m ×10m/s2 = 200 kgm2/s2
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