~ This week we performed a lab where we pulled a car up a ramp at different angles. We hooked the electronic force probe to the car and pulled. We measured the amount of force it took.
Trial #1
Force: .25 N
Distance: 1.33 m
Work: .3325 J
Trial #2
Force: .50 N
Distance: .7 m
Work: .35 J
Trial #3
Force: .4 N
Distance: 1.6 m
Work: .64 J
~ Two of the results show how work is conserved, but the last trial threw us off. We performed Trial #3 multiple times, but came up with the same product of force and distance. It must have been human error that gave us the wrong data. We might have pulled too hard or too little, or we were not able to get a clear measurement on the force because our hands may have been shaking.
Truck Ramps:
This truck ramp us used to pull up and push down heavy objects. The ramp allows these people to perform this action with less force, but not less work. Work is a constant and will stay the same. The ramp uses less force but requires more distance. If they were not to use a ramp, the force will increase and the distance will decrease.
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