The figure shows a 2000 kg cable car descending a high hill. A counterweight of mass 1800 kg on the other side of the hill. Due to mechanical failure, this cable car lost all the wheels and has to relayed on road friction to stop the cable car. What will be the coefficient of friction required to stop this mechanically failed cable car? DDA Counterweight 200 m 30° 20°

An automobile is going up a grade of 15 with an initial velocity of 30 m/s. The coefficient of static friction between the tires and the road is 0.7. a) What minimum distance does it take to stop the car? b) What minimum distance would it take to stop the car if it were going down the grade?

Based on this value, what is the minimum coefficient of static friction μs between the race track and the bicycle?

In the figure, two blocks are connected over a pulley. The mass of block A is 14.0 kg and the coefficient of kinetic friction between A and the incline is 0.140. Angle 0 of the incline is 42.0°. Block A slides down the incline at constant speed. What is the mass of block B? Frictionless, massless pulley A B Number i Units

F(t) Force_Crate Known values: Mass of Block 68 kg TT Hs μk 0 0.63 0.53 26° Problem Statement: A crate is initially at rest on a sloped surface, when a force is applied: F(t) where t is in seconds. Answers: When t=44.47 seconds, the crate has not yet started moving. Find the magnitude of the friction force at that time: 317.771 N The direction of the friction force at that time is: down the slope Find the time required for the crate to start moving: Find the crate's speed when t=174.9 s: 9.485 m/s Be sure to include units with your answers. 169.756 S 240+0.2 N,

Suppose a toy car experiences two horizontal forces: A time-dependent force from its motor of F = 2.0e-0.5tN, and kinetic friction with a coefficient of u = 0.1 from its wheels and bearings. What will its maximum speed be on level ground if it starts from rest? %3D %3D

A truck is traveling at 11.8 m/s down a hill when the brakes on all four wheels lock. The hill makes an angle of 13° with respect to the horizontal. The coefficient of kinetic friction between the tires and the road is 0.956. How far does the truck skid before coming to a stop? Number Units

Two crates of fruit  are released from the top of a ramp inclined at 30 degrees from the horizontal and 4.5 meter long. The two crates consist of  an apple crate of mass 20 kg that is placed in front of a watermelon crate of mass 80 kg.  The apple crate has a coefficient of friction of 0.20 while the watermelon crate has a coefficient of friction of 0.15. How long does it take the apple crate to reach the bottom of the incline if it needs to travel a distance of 4.5 meters?

A baseball player initially running 8.94 m/s slides 5.26 m to a stop at home plate. What is the coefficient of kinetic friction between his uniform and the ground? Equations: vf2 = vi2 + 2×a×Dx                           F = ma                   fk = mkN                 N = Fg = mg

Two small cylindrical plastic containers with flat bottoms are placed on a turntable that has a smooth flat surface. Canister A is empty; canister B is full. Each canister is the same distance r from the center. The coefficient of static friction between the canisters and the turntable is µs. The speed of the turntable is gradually increased. Describe what will happen. Include which container will fall off first or if they will fall off at the same time.