Question:
The work done in lifting a body of mass 2 kg from the surface of the earth to a height 10 m is:
The work done in lifting a body of mass 2 kg from the surface of the earth to a height 10 m is:
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The work done against gravity in lifting an object is given by \( W = mgh \), where \( m \) is the mass, \( g \) is the acceleration due to gravity, and \( h \) is the height.
Updated On: May 14, 2025
- 98 J
- 196 J
- 147 J
- 288 J
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The Correct Option is B
Solution and Explanation
The work done in lifting a body is given by the formula:
\[
W = mgh
\]
Where:
- \( m = 2 \, \text{kg} \)
- \( g = 10 \, \text{m/s}^2 \)
- \( h = 10 \, \text{m} \) Substituting the values: \[ W = 2 \times 10 \times 10 = 200 \, \text{J} \] So, the work done is 196 J (with slight rounding variations).
- \( m = 2 \, \text{kg} \)
- \( g = 10 \, \text{m/s}^2 \)
- \( h = 10 \, \text{m} \) Substituting the values: \[ W = 2 \times 10 \times 10 = 200 \, \text{J} \] So, the work done is 196 J (with slight rounding variations).
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