
Two laborers are controlling the slide of a 400 kg crate down a ramp at constant...
Igor moves a crate out of a lab by allowing it to slide down a ramp. Because the contents are fragile, he wants the crate to move with a slow, constant velocity. To do this, he attaches a rope to the crate as it slides down the ramp. The coefficients of friction between the crate and the ramp are static=0.5 and kinetic=0.2. If the crate has a mass of 72 kg, what is the tension in the rope? (angle of...
You have a crate full of books with a total mass of 32 kg that you have to move from your bedroom to the door of your apartment using a rope attached to the crate. The coefficient of static friction between the crate and the floor is 0.65, and the coefficient of kinetic friction is 0.45 (a) Pulling the rope horizontally, what is the minimum force you have to pull with to get the crate to start moving? (b) Once...