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ICSE Class 10 Answered

What should be the angle bw the force and displacement to get the minimum work
Asked by lovemaan5500 | 15 Mar, 2018, 07:30: AM
answered-by-expert Expert Answer
workdone = force × displacement
displacement should be in the direction of force.
If force and displacements are happen to be in different direction then workdone  W = F×ds×cos(θ)
 
where F is force, ds is displacement and θ is angle between force and displacement
 
In vector notation W = F•ds, W is scalar, F and ds are vectors
 
so if θ=90º, workdone is minimum
Answered by Thiyagarajan K | 15 Mar, 2018, 12:31: PM

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