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How large is the stretching force in the...

How large is the stretching force in the patient's leg figure shown ?

A

`90 N`

B

`60 N`

C

`56 N`

D

`64N`

Text Solution

Verified by Experts

The correct Answer is:
C
`F = sqrt(T^(2) + T^(2) + 2T^(2) cos 30^(@)) = T sqrt(2 + sqrt3)`
`3 xx 9.8 xx sqrt(3.732 = 56`
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