- #1
PhyzWizKid
- 6
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Homework Statement
Hey guys, a gravity car is driven by a weight connected to a string which in turn is connected to the axle, which the weight drives when dropped. I believe the solution is very simple, however I just cannot grasp it. My task is to calculate the distance of a gravity car given the weight of 840g (plus the falling weight, x) and the distance it falls. Initial velocity is 0m/s.The distance will be with respect to x, being the falling weight powering the car.
Mass of car = 840g
Mass of weight = x
Distance Weight Falls = 250mm
Distance = ?
2. The attempt at a solution
Well, the work that the falling weight will do is =mgh =.250*9.81*x = 2.4525x
The mass of the car =.840+x
Friction =u*Fn =.01*840+x*9.81
Distance =?
Thanks guys.