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Figure shows the top view of two horizon...

Figure shows the top view of two horizontal forces pulling a box along the floor. The work done by each force to displace the box 70 cm along the broken line is :

A

24.74 J, 42.4 J

B

42.4 J, 20.75 J

C

40J, 24.74 J

D

42 J, 24 J.

Text Solution

Verified by Experts

The correct Answer is:
A
Work done by force `F_(1), W_(1)= (F_(1) cos 45^@ ) s_(1)=50 cos 45^(@) xx (70)/(100) = 24.74` J
Work done by force `F_(2) , W_(2) =(F_(2) cos 30^(@) ) s_(2)`
`=70 cos 30^(@) xx (70)/(100) = 42.4` J.
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