Chapter 2- Work And Energy Flashcards Preview

MCAT Physics And Math > Chapter 2- Work And Energy > Flashcards

Flashcards in Chapter 2- Work And Energy Deck (14)
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1

Gravitational potential energy

mgh

g- acceleration due to gravity
h- height of object

2

Spring potential energy

(1/2) kx^2

k- spring constant (how stiff it is)
x- displacement from equilibrium

3

Conservative forces

Path independent and don't dissipate energy

4

When is 🔺U = 0

When initial and starting heights are the same

5

Two only ways energy can be transferred??

Work and heat

6

Work

Fd cos(&)

7

Isochoric

Volume stays constant

8

For an isobaric process how do you calculate work?

W = P🔺V

9

Power

W/t or 🔺E/t

10

Units for power

Watts (W) = J/s

11

Work energy theorem

W = 🔺K

12

Mechanical advantage ratio

Fout/ Fin

Fout- force exerted on object by simple machine
Fin- force actually applied on the simple machine

13

How does a pulley system work?

You have to pull it a longer distance but it's easier to pull

14

Efficiency equation

Wout / Win = (load)(load distance) / (effort)(effort distance)