The purpose of this lab was to test our knowledge of unbalanced forces and our applied use of kinematics. We demonstrated these skills with this lab. Our goal was to try and land a weight attached to a cart on another cart below going at constant velocity.
Procedure:
We first found the mass of the entire system. 0.693kg (We rounded to .64kg)
We then solved for acceleration. (The weight was .5N)
a=Fnet/m
a=.5N/.64kg
a=0.78m/s^2
After, we found the distance from the starting position of the weight to where it would land on the cart. The distance was .74m.
Using the information that we now had, we were able to solve using a formula for time.
x=1/2at^2+Vit
(.74)=1/2(.78)(t)^2
1.89=t^2
t=1.37s
Next, using the formula V=(change in)x/(change in)t we found the velocity of the cart on the ground. We concluded that the cart went 1 meter in 3.6 seconds. We manipulated these numbers to find that the cart had a constant velocity of .28m/s. Using these equations we hypothesized that if we placed the constant velocity cart 0.38m away from the weight. We could release both at the same time and the weight would land on top of the cart.
After our initial test, we proved our hypothesis correct and were able to land the weight perfectly on top of the cart.
We filmed our test which can be seen HERE.
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