Pre-lab Preparation Sheet for Experiment #14: Moment of Inertia 1. When you are

Question

Pre-lab Preparation Sheet for Experiment #14: Moment of Inertia 1. When you are testing to find the mass that must be placed on the end of the string to counterbalance friction, you need to see whether different masses make the turntable speed up or slow down. When you make this observation, is it turntable a little push to get it started? Explain why the push is to give the or why not. 2. If you know that a hanging mass of 8 g makes the turntable slow down after it is started and 20 g makes it speed up, what mass will you next try in finding the mass required to produce constant-speed motion? 3. An object starts from rest and moves 1.60 m along a straight line in 8.00 s, gaining speed steadily. Calculate its final speed. I with a diameter of 4.20 cm. The speed of a point on th tape is 16.8 cm/s. Find the angular speed of the spool. . Holding her pet raccoon, a girl stands on the veterinarian's scale, which reads 56.0 kg. Th girl herself has mass 52.5 kg. What is the mass of the raccoon?

Explanation / Answer

1.We know a body continue to be in its state of rest or motion unless acted by some external force so a pull is required so as to change its state and determine the mass required

2.we will check a mass between 8g and 20 g .

3.accleration=a=2S/t*t=0.05

Final speed=at=0.4 m/s

4.angular speed=v/r=8 rad/s

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