Physics and Math Chapter 2: Work and Energy Flashcards Preview

MCAT Math and Physics > Physics and Math Chapter 2: Work and Energy > Flashcards

Flashcards in Physics and Math Chapter 2: Work and Energy Deck (10):
1

What is energy?

It is the property of a system that enables it to do something or make something happen, including the capacity to do work.

2

What are the 4 types of potential energy?

gravitational (mass of object and height)
elastic (spring constant)
electrical (between charged particles)
chemical (between bonds)

3

What are conservative forces?

path independent and do not dissipate the mechanical energy of a system -- ex. gravity and electrostatic

4

What are nonconservative forces?

path dependent and cause dissipation of mechanical energy -- energy is lost as thermal energy -- ex. friction, air resistance and viscous drag

5

What is work?

process by which energy is transferred from one system to another

6

What is power?

The rate at which work is done or energy is transferred

7

What is the work-energy theorem?

States that when net work is done on or by a system, the system's kinetic energy will change by the same amount. In more general applications, the work done on or by a system can be transferred to other forms of energy as well.

8

What is the mechanical advantage?

Factor by which a simple machine multiplies the input force to accomplish work. makes it easier to accomplish

9

What are the 6 simple machines?

inclined plane, wedge, wheel and axle, level, pulley and screw

10

Efficiency?

Ratio of the machine's work output to work input when nonconservative forces are taken into account