Four different pulls are applied on identical trolleys

PHYSICS · Single correct · GCSE · Physics · Forces · Forces

Problem

Four different pulls are applied on identical trolleys. The force, displacement, and angle between them for each pull are given below. Consider the magnitude (absolute value) of the work done in every case. Case A: F=20 NF = 20\,\text{N}, s=2 ms = 2\,\text{m}, θ=0∘\theta = 0^\circ Case B: F=25 NF = 25\,\text{N}, s=1.5 ms = 1.5\,\text{m}, θ=120∘\theta = 120^\circ Case C: F=10 NF = 10\,\text{N}, s=5 ms = 5\,\text{m}, θ=180∘\theta = 180^\circ Case D: F=15 NF = 15\,\text{N}, s=3 ms = 3\,\text{m}, θ=90∘\theta = 90^\circ Which case corresponds to the maximum magnitude of work done? (a) Case A (b) Case D (c) Case C (d) Case B

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