20 35 22 Find the angle between the forces shown if they are in equilibrium.

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Presentation transcript:

Find the angle between the forces shown if they are in equilibrium

A B C

1)Use the cosine rule to find the angles in the triangle Cos C = C = A B C Cos B = B = A = 31.8

2) Interpret the angles back onto the force diagram C = B = A = – = 67.2

2) Interpret the angles back onto the force diagram C = B = A =

2) Interpret the angles back onto the force diagram C = B = A = – 31.8 = 148.2

2) Interpret the angles back onto the force diagram – 31.8 = 148.2

2) Interpret the angles back onto the force diagram –67.2 – = 144.6