PHYS 101 Chapter Notes - Chapter 6: Gravitational Energy, Kinetic Energy, Net Force
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PHYS 101 Full Course Notes
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Work is done on an object by a force when the object moves through a distance . If the direction of a constant force (cid:1832) makes an angle with the direction of motion, the work. Energy can be defined as the ability to the work. In si units, work and energy are measured in joules (1 j = 1 n: m). An object of mass and speed has translational (cid:1831)=(cid:2869)(cid:2870)(cid:2870) kinetic energy: The work-energy principle states that the net work done on an object (by the net force) equals the change in kinetic energy of that object: (cid:3047)= (cid:1831)=(cid:2869)(cid:2870)(cid:2870)(cid:2870) (cid:2869)(cid:2870)(cid:2869)(cid:2870) Potential energy (pe) is energy associated with forces that depend on the position or configuration of objects. Where (cid:1877) is the height of the object of mass above an arbitrary reference point. (cid:1831)(cid:3046)(cid:3047)=(cid:2869)(cid:2870)(cid:1876)(cid:2870) For a stretched for compressed spring, where (cid:1876) is the displacement from the unstretched position and is the spring stiffness constant.