A force of 50 N pulls a trolley 10 m along the floor while acting at 60° to the direction of motion. How much work does it do?
Correct answer C. 250 J
Explanation
W = Fd cos θ = 50 × 10 × cos 60° = 500 × 0.5 = 250 J. Using sin 60° gives 433 J, which is the wrong component.
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