An orthodontist places 35 pounds of tension on the wire across your teeth.The insicor is just forward so that the wire is bent at 15 degrees on either side. a. What net force does the wire apply to the tooth? b. The tooth shifts and the ledt angle becomes 10 degrees while the right angle becomes 20 degrees. Assuming that the tension stays the same, what force is now applied to the tooth?

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!