Chapter 7 Work, Energy, and Simple Machines - Part 3

What is the power output of a crane lifting a 2000 kg load to a height of 10 m in 20 seconds? (g = 9.8 m/s²)

Type: MCQ • Marks: 1
What is the power output of a crane lifting a 2000 kg load to a height of 10 m in 20 seconds? (g = 9.8 m/s²)
Options
A. 4900 W
B. 19,600 W
C. 9800 W
D. 980 W
Explanation
Work = 2000 × 9.8 × 10 = 196,000 J; Power = 196,000 / 20 = 9800 W.
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Class 9th Science (MCQ)

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