PHYSICS 151 Chapter Notes - Chapter Energy: Inclined Plane, Mechanical Energy, Potential Energy
12 Jul 2016
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Mechanical energy (e) energy associated with the motion and position of an object. Energy as a result of gravity pulling downwards. Energy may be lost in the form of: Some problem types: gravitational potential energy (free fall, incline plane) ----> What is the velocity of the ball at point 2: conservation of energy ----> The dip and rise in the middle significant: loop de loops. Minimum height h to make it around loop of radius r ----> Minimum initial speed to make it around loop of radius r ----: pendulum ----, velocity is greatest at the bottom of the swing. Notes on pendulums: vertical heights during the swing change constantly, but length of pendulum string are constant, elastic collisions ----> If one object is initially at rest we have 2 equations where m1 begins in motion, and m2 at rest (cid:1848)(cid:2869)(cid:3033)=(cid:2869) (cid:2870) (cid:2869)+(cid:2870)(cid:1848)(cid:2869) (cid:1848)(cid:2870)(cid:3033)= (cid:884)(cid:2869)(cid:2869)+(cid:2870)(cid:1848)(cid:2869) If both objects begin in motion, we need to use both energy and momentum.
