Class 9 Exam > Class 9 Questions > 9800 joule of energy was spent to raise a mas...
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9800 joule of energy was spent to raise a mass of 50kg, the mass was raised to a height of
- a)20m
- b)980m
- c)10m
- d)none of these
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
9800 joule of energy was spent to raise a mass of 50kg, the mass was r...
Potential energy = mgh, here, RE = 9800 j. mass = 50kg, g = 9.8m/s2. Therefore, 9800 = 50 x 9.8 x h, h= 9800/50 x 9.8 = 20m.
Most Upvoted Answer
9800 joule of energy was spent to raise a mass of 50kg, the mass was r...
Potential= MGH
9800=50*9.8*h
h=20.
by the way there is nothing to solve in this qus
9800=50*9.8*h
h=20.
by the way there is nothing to solve in this qus
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Community Answer
9800 joule of energy was spent to raise a mass of 50kg, the mass was r...
Given information:
- Energy spent: 9800 joules
- Mass raised: 50 kg
- Height raised: Unknown
To find the height raised, we can use the formula for gravitational potential energy:
Potential Energy = Mass x Gravity x Height
Where:
- Potential Energy is the energy spent (9800 joules)
- Mass is the mass raised (50 kg)
- Gravity is the acceleration due to gravity (9.8 m/s^2)
- Height is the height raised (unknown)
We can rearrange the formula to solve for height:
Height = Potential Energy / (Mass x Gravity)
Substituting the given values:
Height = 9800 joules / (50 kg x 9.8 m/s^2)
Calculating the value:
Height = 9800 joules / 490 kg·m/s^2
Height = 20 meters
Therefore, the correct answer is option A) 20m.
- Energy spent: 9800 joules
- Mass raised: 50 kg
- Height raised: Unknown
To find the height raised, we can use the formula for gravitational potential energy:
Potential Energy = Mass x Gravity x Height
Where:
- Potential Energy is the energy spent (9800 joules)
- Mass is the mass raised (50 kg)
- Gravity is the acceleration due to gravity (9.8 m/s^2)
- Height is the height raised (unknown)
We can rearrange the formula to solve for height:
Height = Potential Energy / (Mass x Gravity)
Substituting the given values:
Height = 9800 joules / (50 kg x 9.8 m/s^2)
Calculating the value:
Height = 9800 joules / 490 kg·m/s^2
Height = 20 meters
Therefore, the correct answer is option A) 20m.
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9800 joule of energy was spent to raise a mass of 50kg, the mass was raised to a height ofa)20mb)980mc)10md)none of theseCorrect answer is option 'A'. Can you explain this answer?
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