General Science - Physics (Basics)
SSC CGL 2024: What is the work done when a force of 15 N moves an object 4 m perpendicular to the direction of force?
SSC CGL 2024: What is the work done when a force of 15 N moves an object 4 m perpendicular to the direction of force?
easy Q1 of 15
Step-by-Step Solution
Step 1: Understand the work formula
Work done is calculated as Force × Displacement × cos θ, where θ is the angle between force and displacement.Step 2: Apply the angle condition
Since the force is perpendicular to displacement, θ = 90°, and cos 90° = 0, so work done = 15 × 4 × 0 = 0 Joules.Final Answer:
0 Joules → Option BQuick Check:
Work done = Force × Displacement × cos 90° = 0 Joules ✅
Quick Trick: Work is zero if force is perpendicular to displacement.
Common Mistakes:
MISTAKES- Assuming work is force × displacement without considering angle.
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