The two blocks used in a measuring device have negligible weight. If the spring is compressed 5 in. when in the position shown, determine the smallest axial force P which the adjustment screw must exert on B in order to start the movement of B downward. The end of the screw is smooth and the coefficient of static friction at all other points of contact is ms = 0.3.

STA3032 Week 3 2.5.10 COMMON CONTINUOUS DISTRIBUTIONS 1 A uniform random variable places equal weight to all values within its support and is continuous. a A uniform random variable has p.d.f. 1 f x = b−a for a≤x≤b 2 Normal a The normal distribution has parameter µ and a scale parameter σ2 b Normal distribution has p.d.f. −1(x−μ) 1 2σ f(x)= e for -∞