Physics
Grade-7
Easy
Question
Calculate the missing term. Consider the value of g as 10 m/s2
m = 15 Kg, h =?, GPE = 1500 J (Take g = 10 m/s2)
- 10 m
- 100 m
- 150 m
Hint:
The h of a body that has GPE 10 m/s2, mass 15 kg is 10m.
The correct answer is: 10 m
- The gravitational potential energy GPE= mgh.
- If the m is 15 kg and the GPE is 1500 J, the h can be derived from the GPE formula.
- 1500= 15x 10x h, that is 1500= 150
- h= 1500/150= 10. Thus the height of the object is 10 m.
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