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Forces P, Q, R act along the sides BC, CA, AB respectively of triangle ABC.If the resultant passes through the incentre, show that P+Q+R=0

Forces P, Q, R act along the sides BC, CA, AB respectively of triangle ABC.If the resultant passes through the incentre, show that P+Q+R=0

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Grade:12th pass

2 Answers

Arun
25750 Points
4 years ago
It should be equal to 0 dear student 
 
Take algebraic some of moment of all forces about in centre and It should be equal to 0
 
r.P + r.Q + r.R = 0
 
hence r.(P+Q+R) = 0
 
hence P + Q + R= 0
Vibekjyoti Sahoo
145 Points
2 years ago
It should be equal to 0 dear student 
 
Take algebraic some of moment of all forces about in centre and It should be equal to 0
 
r.P + r.Q + r.R = 0
 
hence r.(P+Q+R) = 0
 
hence P + Q + R= 0
 
 
 

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