Chapter 7 Work, Energy, and Simple Machines - Part 1
What is the work done when a person carries a heavy suitcase horizontally across a platform for 20 meters?
Type: MCQ • Marks: 1
What is the work done when a person carries a heavy suitcase horizontally across a platform for 20 meters?
Options
A. Negative
B. Positive
C. Maximum
D. Zero
Explanation
Carrying a load horizontally involves upward lifting force perpendicular to horizontal displacement, resulting in zero work by gravity/lifter against motion.
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Class 9thScience (MCQ)
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