Question

Determine the angle θ so that the force in the bolt 1 has maximum value.

(a) 180’

(b) 90’

(c) 0’

(d) 45’

I was tested on this by my senior.

This fundamental question comes from the Eccentric Load on Circular Base in unit Threaded Joints of Machine Design

Answer 1

Accurate option is (a) 180’

In simpler terms: F₁=2Plx(a-b Cos θ)/4(2a²+b²), hence for force to be max Cosθ=-1 or θ=180’.