Assuming that the pendulum consists of a point mass on the end of a string whose

Question

Assuming that the pendulum consists of a point mass on the end of a string whose length is equal to the distance from the pivot point to the center of gravity. When the pendulum swings, it necessarily rotates. This suggests that there is some rotational kinetic energy as well as translation kinetic energy (mv^2/2). if significant, this will add systematic error to the speed of the ball and pendulum after the collision. Will it tend to make calculated speed too large or too small? Can you detect any systematic error in you calculated values? Explain

Explanation / Answer

if the rotation tooks place the kinetic energy is not conserved as the external force of torque will come from the string. the error will make the calculated KE too large yes we can detect the error by measuring the difference between ideal and experimental values cheers :)

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