Recent content by Xinio64

Homework Statement "The compressive strength of a concrete specimen follows a normal distribution with a mean value of 2.8 ksi and a coefficient of variation (COV) of 0.1. If the applied stress is 2.5 ksi, find the probability of failure." Homework Equations normal distribution formula...

Well I drawn two free body diagrams, one representing each block. The upper block has a weight and normal force of of 49N and a static frictional force pointing to the right. The lower block has a weight and normal force of 196N and a static frictional force of 78.4N pointing to the left and a...

Newtons law, interacting objects question?? A block of mass 5.00 Kg sits on top of a second block of mass 15.0 Kg, which in turn sits on a horizontal table. The coefficients of friction between the two blocks are : μs = 0.300 and μk = 0.100. The coefficients of friction between the lower...