Record all the data and provide calculations in order to find the force of friction and μk.Repeat step 4 and 5 but add the masses when necessary and also ad friction of the cart.Do 3-6 trials of this set and record data in your data booklet.(make sure you measure the distance that the cart travels as well) It is suggested to use the same distance throughout all trials in order to get an accurate calculation. For the first test, allow the weight to pull the cart with no friction restrictions or weights and time how long it takes for the action to complete.
Apply the cart to the track and attach the weight to the cart via a measured string that's you have already cut out according to the distance.Weigh the masses and the cart on the electric scale.Gather materials that are necessary for the lab.Hypothesis: When mass of an object increases, the coefficient of friction will stay the same but the kinetic friction will increase as a result. The coefficient of kinetic friction is μk. Kinetic friction is when two objects are moving relative to each other and rub together like a puck on ice. Static friction occurs when the two objects are not moving relative to each other like a chair on the ground. Background Information: Friction is the force that resists relative motion between two bodies in contact.
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