A collar B of weight W is attached to the spring AB and can move along the rod shown The constant of the spring is 1 5kN m and the spring is unstretched when en 0 Knowing that the coefficient of static friction between the collar and the rod is 0 40, determine the range of values of W for which equ...

FBD collar Impending motion down Impending motion up E 2 Stretch of spring x AB a F kx k Impen ...

A collar B of weight W is attached to the spring AB and can move along the

Question:

A collar B of weight W is attached to the spring AB and can move along the rod shown. The constant of the spring is 1.5kN/m and the spring is unstretched when en θ = 0. Knowing that the coefficient of static friction between the collar and the rod is 0.40, determine the range of values of W for which equilibrium is maintained when

(a) θ = 20°,

(b) θ = 30°.

a 0.5 m- To wwwww B