Whenever angle (θ) between the force and the displacement is obtuse, i.e., 90∘<θ<180∘, the work done is negative.
True
False
Ambiguous
Data insufficient
A
False
B
Ambiguous
C
Data insufficient
D
True
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Solution
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we know, W=F×S×cosθ if θwillbegreaterthan900thenthevalueofcosθwillbenegative hence,the Workdone will be negative.
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