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# Phys Sci. 8e-2

### Work,Power, MA, simple machines

A 45 kg runner with a force of 22 N will have what acceleration? 0.49 m/s2
output divided by input equals? Mechanical Advantage
What is the mechanical advantage of an input force of 10 N with an output force of 100 N? 10
Which pulley has the most mechanical advantage: one line or 4 line? 4 line
What is the work output of 200 Joules at 95% efficiency? 190 Joules
How far will 10,000 Joules move a 3300 N load? 3 meters
What is the mechanical advantage of a 100m long and 20m tall ramp that can move a 2500 kg mass? 5
Friction causes energy to convert to what? Thermal energy
A force that moves an object in the SAME direction as the force is called...? Work
A lever with the fulcrum closest to the load would have the largest...? Mechanical advantage
The unit for work is the ? Joule
What is the average speed per hour if you drive 10 km in 15 minutes? 40 km/h
What is the required force of each chain on a swing to support the weight of 200 N? 100 N
The unit for power is the...? Watt
What is the MA of a ramp that is 3 meters long and 0.5 meter high? 6
What happens to the speed of an object as potential energy is gained decreases
Power is? How fast work is being done
Which mechanical advantage is it when the input force is equal to the output force? Mechanical Advantage 1
What is the length of the lever to the fulcrum called? Li (Input)
What is the length of the lever from the fulcrum to the load called? Lo (Output)
If you divide the Li by the Lo you get what? Mechanical Advantage (MA)
How do you figure the mechanical advantage of a ramp? The length of the ramp divided by the height of the ramp
Output force divided by Input force gives you what? Mechanical Advantage
Created by: FordLCHS