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10th post

(0 reviews)

By CharlieEckert

· 866 views

Well I'm really starting to run out idea for creative content so ill be writing about the eraser i just dropped out boredom. The eraser weighs about 1 gram and is dropped from the height of 1 m. The potential energy eraser is given by mgh and = .01 J. Neglecting air resistance, the eraser has a final velocity of about 4.47 m/s. This gives it a momentum of .00447 kg m/s downward since momentum = v * m. Neglecting the fact that the eraser bounces a little, what happens to the momentum in the downward direction after the eraser hits the floor. Well the floor is so massive that the floor downward movement is negligible!!!

Yah quality physics topics!!!

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    bdavis

    Members

    i admire your spunk my friend. But even in your tired state, you still came up with a valid physics concept and related it to an everyday occurrence. i can't tell you how many times i drop my eraser and know i know that if i have a similar eraser, that is how much energy is being transferred from potential to kinetic energy.

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