Foundation
Physics Foundation
Work Power Energy
Question
A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force and displacement is :
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Solution
Given : F = 20N, S = 2m, Work, W = 20J.
W = FScosθ ⇒ 20 = 20 × 2 × cosθ
cosθ = , or θ = 60º