A man ties a stone to a thread and swings it around himself. (a) Name the kind of motion of stone. (b) Is the motion accelerated? Why? (c) Which force keeps the stone in its path? (d) What is the direction of force
Answers
Answer:
The stone is moving in a “CIRCULAR MOTION". b). Yes, because the direction of the velocity of stone changes at each point of the circular path, thus it as an example of accelerated motion.
Explanation:
When a piece of stone tied at the end of a thread is whirled in a horizontal circle it will rotate because of tension in the thread which creates centripetal force.
CENTRIPETAL FORCE
The CENTRIPETAL FORCE is the force which keeps the stone in its path.
Direction of force means that the force acts in the same direction in which the force is applied and force is also a vector quantity The SI unit of force is newton (N)
Uniform circular motion is accelerated because the velocity changes due to continuous change in the direction of motion. So, even when the body moves ta a constant speed, its velocity is not constant. Thus, for a body moving in a circular path at a constant speed, its velocity changes continuously
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