Two 10-kilogram boxes are connected by a massless stringthatpasses over a massless frictionless pulley as shown above.Theboxes remain at rest, with the one on the right hangingverticallyand the one on the left 2 meters from the bottom of aninclinedplane that makes an angle of 60 degrees with thehorizontal. Thecoefficients of kinetic friction and static frictionbetween theleft-box and the plane are 0.15 and 0.30, respectively.You may useg=10m/s^2, sin 60=0.87 and cos 60=0.50.
a. What is the tension T in the string?
b.Determine the magnitude of the frictional force acting onthebox on the plane.
The string is then cut and left-hand box slides downtheinclined plane.
c.Determine the amount of mechanical energy that isconvertedinto thermal energy during the slide to the bottom.
d.Determine the kinetic energy of the left-hand box whenitreaches the bottom of the plane.
