In the periodic motion lab, you measured the effect of mass, length, and angle o

Question

In the periodic motion lab, you measured the effect of mass, length, and angle on the period of a pendulum. To measure the effect of one of these variables, the other two were held constant. Briefly explain why. To determine which variables affected the period, you compared results for small, medium, and large values of the variable were testing. When taking data, you were asked to average three measurements each for the small, medium, and large values. What is one possible reason you were asked to average three values instead of two?

Explanation / Answer

(1). To measure the effect of one variable other variable must be constant, so we can study the effect of only the one variable. If other variables are not constant during study then the one variable may change due to effect of others variables and we do not get accuracy in observation.

(2). to reduce the effect of error in observation and to get accuracy we should find average. To get close result to exact or true value we need to take more and more observation. large number of overestimation give answer close to true value

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