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A 15.2kg portrait is hanging on a wall by two threads tied on its two upper...

A 15.2kg portrait is hanging on a wall by two threads tied on its two upper corners. if both threads have the same angle (based on the x-axis), what should the angle be so that the tension of each thread is equal to the portrait's weight?

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Answer #1

From Newton's second law ,At equilibrium

Given T1=T2=W

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