Chapter 7 Work, Energy, and Simple Machines - Part 1

Which of the following forces does negative work when an object moves upward?

Type: MCQ • Marks: 1
Which of the following forces does negative work when an object moves upward?
Options
A. Gravitational force
B. Normal reaction
C. Tension
D. Applied pulling force
Explanation
Gravity acts downward while displacement is upward, doing negative work (cos 180° = -1).
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Class 9th Science (MCQ)

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