ICSE Class 10 Physics 2023 Solved Paper
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Question : 23
Total: 76
What should be the angle between the direction of force and the direction of displacement, for work to be negative?
Solution:
The angle between the direction of force and the direction of displacement, for work to be negative is 180 ∘
∵ W = Fs cos θ .
Here θ = 180 ∘
∴ W = Fs cos 180 ∘
= − Fs ( ∵ cos 180 ∘ = − 1 )
∴
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