In the image is a stopper attached to a fishing line that is threaded theough a glass rod. Hanging from the end of the line opposite the stopper is a 100-gram mass. The stopper is being whirled in a horizontal circle, first quickly, then decreasing to a slower speed.
a. Is the string pulling inward on the stopper?
b. Is there a force pulling the stopper outward?
c. True or false: The inward force and outward forces balance, and since the speed is constant, there's no acceleration and there is equilibrium.
This question is based on Newton's laws of motion topic.
Uniform circular motion is an accelerated motion. When a body moves in a circular path with constant speed, even thought the speed of the body is constant, its direction keeps on changing and because of that the velocity of the object is variable and that makes the motion an accelerated motion.
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