Given that us 020 for all surfaces find the force P needed t

Given that us 0.20 for all surfaces, find the force P needed to start the block A to the right. 1,000 N 20° 2.000 N Diagram for Question 7

Frictional force on lower surface of A is 0.2*2000 = 400 N

Frictional force on upper surface of A is 0.2*1000Cos20 = 187.9385 N

Horizontal component of fric force on upper surface of A is 187.9385Cos20 = 176.604 N

Total friction force on A = 400 + 176.604 = 576.604N

So, P = 576.604 N