Friday, April 11, 2008
Experiment #2Oblectives: To see if the force required to an oblect from rest different from the force required to keep an object in move.Hypothesis: The force will be greater if there is no movement in the cart. then it would be if the cart was already moving.Materials: 2000 gram weight, Cart, string, ScaleProcedures: First we put the weight inside of the Cart.2. Tied the string up to the front of the cart.3. Then attached the the scale to the string.4. We pulled, tuged and jerk the cart to see the results.5. Recorded the data.Data: Tug Jerk Pull20g-.2n 110-1.1n 200-2n10g-.1n 100-1n 200-2n30-.3n 120-1.2n 150-1.5n50-.5n 100-1n 200-2.5n30-.3n 1201.2n 250-2.5nConclusions: It takes more force to start an object if it is not moving already then if it if already was moving. It takes more force to start an object moveing slowly then to start an object that is moving quikly. My Hypothesis was correct.
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