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Q.

Which of the following expressions correctly calculates the work done by a force acting obliquely on a body?


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a

F.d

b

F.d sin θ

c

F.d cos θ

d

F.v 

answer is C.

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Detailed Solution

Work done by a force obliquely can be calculated by the expression.
W = F×d cos θ
Work is said to be done when there is a displacement in the direction of the force. Work is characterized as the measurement of an object's displacement. Riding a bike uphill or carrying something while the earth's gravity is present are two frequent examples of force. Work is essentially just energy manifested mechanically. The symbol for it is  W.
W = F×d cos θ
Where

●        F is the force applied


●        d is the displacement


●        θ is the angle between the force and displacement vectors.


 
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