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Determine the point of application of fo...

Determine the point of application of force, when forces of `20 N` and `30 N` are acting on rod as shown in figure.

A

70 m

B

80 m

C

60 m

D

50 m

Text Solution

Verified by Experts

The correct Answer is:
A
Net force acting on the rod `F_(rel)=10 N`
Net torque acting on the rod about point C is
`tau_(c)=(20xx0)+(30xx20)=600` clockwise
Let the point of application be at a distance `x` from point `C` figure.

`600=10ximpliesx=60 CM`
Therefore, `70 CM` from `A` is the point of application of force.
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