Recent content by Physicsdummy1

Can anybody help? I need some assistance on this problem so I know what to do on my test tomorrow.

1. Consider a ramp of length L inclined at an angle Ɵ > (the angle of repose) to the horizontal. A block of mass m is placed at the high end and released from rest. (a) If µ = 0; what is the speed of the block at the bottom of the ramp? (b) Suppose now, that µ ≠ 0: What is the speed at some...

3. Two train cars are to be coupled on the tracks. One of the cars, say A is initially at rest. The other car, say B is traveling at a speed v toward A: Car B is empty, whilst car A is full of pig iron and has a mass of 102mB: After coupling, the two cars travel a distance of 20 meters before...

2. A car of mass m traveling down the motorway at 100 km/hr suddenly stops pressing the accelerator pedal. The result is that the car slows to 60 km/hr in ten seconds. Suppose all travel is along a level road. (a) What is the average force acting on the car serving to slow it's motion? (b) How...

1. Consider a ramp of length L inclined at an angle Ɵ > (the angle of repose) to the horizontal. A block of mass m is placed at the high end and released from rest. (a) If µ = 0; what is the speed of the block at the bottom of the ramp? (b) Suppose now, that µ ≠ 0: What is the speed at some...