A block of mass m1 = 320 g is at rest on a plane that makes an angle = 30 above the horizontal. The

A block of mass m1 = 320 g is at rest on a plane that makes an angle θ = 30° above the horizontal. The coefficient of kinetic friction between the block and the plane is μk = 0.10. The block is attached to a second block of mass m2 = 190 g that hangs freely by a string that passes over a frictionless and massless pulley. Find its speed when the second block has fallen 30.0 cm.

 

30