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  • In the given diagram; there are two strings attached with a mass of 50kg ; the Tension in the string P is 100 N; What is the tension in string Q <img alt="" src="https

In the given diagram; there are two strings attached with a mass of 50kg ; the Tension in the string P is 100 N; What is the tension in string Q

Option: 1

 

50 N


Option: 2

200 N


Option: 3

100.40 N

 


Option: 4

390 N


Answers (1)

best_answer

We can determine the unknown angles by making the Free Body Diagram 

Let us assume that the string P is a line intersecting two parallel lines; From that, we can say that string P is making 60-degree angles with horizontal  ( alternate interior angle )

We know that mass is acting downwards and its opposite angle is 85 degrees and String Q’s opposite angle is 150 degrees

From Lami’s theorem, we can say that 

  \frac{R}{Sin150^{0}}= \frac{Q}{Sin85^{0}}

 

\Rightarrow R=100.40 N

 

Posted by

himanshu.meshram

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