Q.3(a) Two forces P+Q and P-Q make an angle 2a with one another and their resultant...

Transcribed Image Text:

Q.3(a) Two forces P+Q and P-Q make an angle 2a with one another and their resultant makes an angle with the bisector of the angle between them. Show that Ptan = Qtana. 9 (b) Prove that the necessary and sufficient condition for the equilibrium of a system of coplanar couples is that the algebraic sum of their moments is zero. 8 Q.3(a) Two forces P+Q and P-Q make an angle 2a with one another and their resultant makes an angle with the bisector of the angle between them. Show that Ptan = Qtana. 9 (b) Prove that the necessary and sufficient condition for the equilibrium of a system of coplanar couples is that the algebraic sum of their moments is zero. 8

Answer rating: 100% (QA)

a To show that Ptan Qtan given the conditions above we can use vector addition and the properties of ... View the full answer