n the Physics 211 Laboratory one group of students has decided to pursue their o

Question

n the Physics 211 Laboratory one group of students has decided to pursue their own experiments. They make a simple pendulum from a weight attached to a string of length L. They attach the other end of the string to a fixed support. They hold the weight with the string taut and horizontal and then release it. With their motion sensor they measure the speed of the weight as the string passes through the vertical. The students do a second experiment. They attach one end of a uniform stick of length L to the support, which acts as a pivot. They hold the stick horizontal and release it. They then measure the speed of the tip of the stick with their motion sensor. The mass of the pendulum weight and the mass of the stick are the same. Do they measure the same speed?

Explanation / Answer

No. The maximum speed of any oscillation can be given as v=w*x. Since the time period will be different for the two case as one represent simple pendulam (pendulam) while the other represent physical or compound pendulam. Simple pendulam is a special case of compound pendulam hence in general their time period dont match and hence the angular frequency (w) there for they wont measure same speed.

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