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CBSE Class 9 Answered

in displacing a body 5 metre by a force of 50 Newton the work done is 125 joule find out the angle between the direction of force and displacement
Asked by karanbora625 | 11 Nov, 2019, 19:12: PM
answered-by-expert Expert Answer
We know, 
 
W = Fscosθ
F = 50 N 
s = 5 m 
W = 125 J 
125 = 50 x 5 x cos θ
cos θ = 125/250 = 0.5 
Thus 
θ = cos-1 (1/2) = 60° 
Thus, the angle between force and displacement is 60°. 
Answered by Shiwani Sawant | 12 Nov, 2019, 13:11: PM

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