Mechanical Energy Science 10.

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Presentation transcript:

Mechanical Energy Science 10

Formulas

Practice

Practice Answers

Practice Answers

Mechanical Energy

Mechanical Energy

Formula for Mechanical Energy

Remember these Tips!

Practice:

Answers

Answers

Answers

Answers

Pendulum How does a pendulum work? Draw out the movement of the pendulum: where would it have maximum gravitational potential energy? Maximum kinetic energy? How does it demonstrate law of conservation of energy?

Pendulum http://phet.colorado.edu/sims/pendulum-lab/pendulum-lab_en.html

Practice Standing on level ground, a person with a mass of 55.0 kg jumps straight up into the air to a position where the person has gained 800J of gravitational potential energy. How high did the person leap? A construction worker drops a 2.00 kg hammer from a roof. When the hammer is 50.0 m above the ground, it has a total mechanical energy of 1.88 x 103 J. Calculate the kinetic energy of the hammer. Try to complete the practice problems on pg 183, 184 and 185  Question 8 - 13

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