riding in a car that is similar to this experiment? Describe two instances where you feel forces in a car in terms of inertia. Experiment 2: Unbalanced Forces - Newton’s Second Law Table 1: Motion Data for Experiment 2 Trial M 1 M
2 d of M 2 Time (s) Calculated Acceleration Procedure 1 1 2 3 4
5 Average Procedure 2 1 2 3 4 5 Average
Questions: When you give one set of washers a downward push, does it move as easily as the other set? Does it stop before it reaches the floor? How do you explain this behavior? Draw a FBD for M1 and M2 in each procedure (Procedure 1 and Procedure 2). Draw force arrows for the force due to gravity acting on both masses (Fg1 and Fg2), and the force of tension (FT). Also draw arrows indication the direction of acceleration, a. Experiment 3: Newton’s Third Law Questions: Explain what caused the balloon to move in terms of
Newton’s Third Law. What is the force pair in this experiment? Draw a Free Body Diagram (FBD) to represent the (unbalanced) forces on the balloon/straw combination. Add some mass to the straw by taping some metal washers to the bottom and repeat the experiment. How does this change the motion of the assembly? How does this change the FBD? If the recoil of the rifle has the same magnitude force on the shooter as the rifle has on the bullet, why does the shooter not fly backwards with a high velocity?
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- Spring '19
- Tom Pope