1. Physics Lab C Div. New York State Coaches Clinic October 10-11th Poughkeepsie New York

2. Energy Work Kinetic Energy Gravitational Potential Energy Spring Potential Energy Power Electric Energy Stored in Capacitors Electrical Power

3. Energy Continued Heat Produced in Electrical Resistance Work done by Fluids Fluid Power Rotational Work Energy Power

4. Work Work is Scalar Quantity When a force acts to move an object, we say that Work was done on the object by the Force. Force is the agent of change, and Work is a measure of the change. The Force does the Work, not the agent that created the Force. Do not confuse the work you do to create a force with the work done by the force you create; they are not the same. The force you exert holding a 100 pound barbell above your head does no work on the barbell while the barbell is at rest, but you do work (on a molecular level) to create that force. W=F cosӨ*s F is constant force, s is displacement Ө is the angle between F and s. SI unit joule or erg.

5. Kinetic Energy Energy due to an object's state of linear motion. KE=1/2m*v 2 The unit of kinetic energy in any system is equal to the unit of work in that system.

6. Gravitational potential Energy Work needed to change an object's height relative to the Earth. E (gravitational)=mgy Mg= weight Y=difference in height

7. Spring Potential Energy Work needed to compress or stretch a spring. U=1/2kx 2 k = spring force constant x = distance from equilibrium

8. Power Power adds the time factor to work. P=Δw/Δt Unit Watt

9. Electrical Energy Energy of a charged capacitor. W= ½ cv 2 C = Capacitance in farads V= volts W= work in joules

10. Electrical Power P=V*I P is expresses in watts V=Volts I= current in amps

11. Fluids Pressure Volume Flow Force

12. Rotational work and Power Linear quantities have analogous angular counterparts. Torque is the tendency of a force to rotate an object. The total kinetic energy of a rotating object has to include its rotational kinetic energy. Pure rolling motion is the superposition of pure translational and pure rotational motion.

13. Efficiency of conversions Losses due to heat, friction. Calculation of. Identification of.

14. Energy Conversions Matter and Energy can not be created or destroyed it changes from form to form. Conversion of mechanical to electrical Conversion of electrical to mechanical Conversion of electrical to electrical Conversion of gravitational to Kinetic And so forth

17. Alternative Energy Solar to Electrical Wind to Electrical Hydroelectric power Fuel Cells Geothermal Others

18. SI Units Students should learn and be familiar with them. See hand out Practical Guide to SI Units

19. Data Collection Students may be required to collect data. When collecting data students should show all work and record all values Event Supervisor may give partial credit for work completed with wrong data values.