# Civil Engineering - Strength of Materials - Discussion

### Discussion :: Strength of Materials - Section 3 (Q.No.41)

41.

A joint of a frame is subjected to three tensile force P, Q and R equally inclined to each other. If P is 10 tonnes, the other forces will be

 [A]. Q = 10 tonnes and R = zero [B]. R + 10 tonnes and Q = zero [C]. Q + R = 10 tonnes [D]. Q - R = zero [E]. Q and R each is equal to 10 tonnes.

Explanation:

No answer description available for this question.

 Chiru said: (Nov 16, 2016) BY SIN RULE. P/SIN = Q/SIN = R/SIN. Given equal angles THERFORE P = Q = R.

 Deep said: (Dec 3, 2018) @Chiru. Where is it mentioned of equal angles?

 Swetha said: (Dec 9, 2018) If Q=R means Q-R=0, so why not option D?

 Ayesha said: (Aug 9, 2019) Equally inclined to each other means the angle between PQR is 180 degree. How the sine rule will work? sin180= zero. And if we use that its not defined. Can anyone explain?

 Muhammad Usman said: (Feb 17, 2020) The direction is not given so we can not say that Q-R=0 so the given answer is correct.

 Fgc said: (Mar 18, 2020) Angle between them is 120 because 360/3 = 120.