A body is constrained to move along the y-axis and force F=(-2î+15ĵ+6k̂) N acts on it. Find the work for displacement 10ĵ m.
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A body is constrained to move along the y-axis and force F=(−2î+15ĵ+6k̂) N acts on it. Find the work for displacement 10ĵ m.

G1 Physics · Accepted Answer

Step 1 — Principle: For constant force, mechanical work is the scalar product of force and displacement. Step 2 — Working: W=F·s=(−2)(0)+(15)(10)+(6)(0)=150 J. Step 3 — Working: Only the force component parallel to motion contributes. Correct answer: A — 150 J.