1. Block Awith a mass of 10kg, rests on 30 degree incline.The coefficient of kinetic friction is 0.20. The attached string is parallel to the incline and passes over masskess frictionless pulley on top. Block B with mass of 3.0kg is attached to the dangling end of the string.
A) Draw a force diagrams for both blocks A and B
B) Express the weight of Block A as a som of x and y components with the possitive x axis going up the slope. use unit vector notation
C) What forces act on the block sysyem?
D) What is the acceleration of the blocks? (magnitude and direction)
E) What is the tension in the cord
2. A puck of mass m1=o.98kg slides in a circle of radius r=20.0cm on a frictionless table while attached to a hanging cylinder of mass m2=2.00 kg by means of cord that extends through a hole in the table. What speed keeps the cylinder at rest( in other words keep the radius constant)?
3. In downhill speed skiing a skier is slowrd by both the air drag force on the body and the kinetic friction force on the skis. Suppose the slope angle is 40 degrees, the snow is dry snow with coefficient of kinetic friction uk= 0.040, the mass of skier and the equipment is m=85.0kg the drag coefficient is C=0.150 and the air density is 1.20 kg/m3. What is the terminal speed?