Question

A frame consists of five bars forming the sides of a rhombus ABCD with dia If four equal forces P act inwards at the middle points of the sides and at right angle to P cos 20 where o denotes the the respective sides, prove that the tension in AC is sin 0 angle BAC. ​

Answer 1

Step-by-step explanation:

The force acting on the given plane will be Fcosθ

Also, the effective area along which the force acts is given by

cosθ

a

Thus tensile strength on plane PQ will be:

Area

NormalForce

=

a/cosθ

Fcosθ

=

a

Fcos

2

θ