General Science - Physics (Basics)
RRB NTPC 2023: When does the work done by a force become zero?
RRB NTPC 2023: When does the work done by a force become zero?
easy Q12 of 15
Step-by-Step Solution
Step 1: Understand the concept
Work done depends on force, displacement, and the angle between them.Step 2: Analyze conditions for zero work
If displacement is zero, no matter how much force is applied, work done = Force × 0 = 0.Final Answer:
When displacement is zero → Option CQuick Check:
Work done = 0 when displacement = 0 ✅
Quick Trick: Work = Force × Displacement × cos θ; zero displacement means zero work.
Common Mistakes:
MISTAKES- Assuming work is zero when force is maximum or displacement is maximum.
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