The pendulum apparatus in the video has a total mass of 578 grams. The pendulum rod has a small mass of 20 grams so you can treat all the mass of the pendulum as if it were hanging at the end which is called the “bob”. The mass of the rod should be taken into account in determining the center of mass of the apparatus which is 71.3 cm (not the length of the pendulum). A marble which has a mass of 10 g is fired at the pendulum bob which has clay on it which allows the marble to stick to it. Derive a formula for the velocity of the marble/bob system (vmb) as a function of r, g and ? using the conservation of energy and write it below.

The pendulum apparatus in the video has a total mass of 578 grams. The pendulum rod has a small mass of 20 grams so you can treat all the mass of the pendulum as if it were hanging at the end which is called the “bob”. The mass of the rod should be taken into account in determining the center of mass of the apparatus which is 71.3 cm (not the length of the pendulum). A marble which has a mass of 10 g is fired at the pendulum bob which has clay on it which allows the marble to stick to it. Derive a formula for the velocity of the marble/bob system (vmb) as a function of r, g and ? using the conservation of energy and write it below.

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