S2 Week 3: H Physics Terms & Equations - Quant NRG 2

Front

Work

Back

the transfer of energy by a force that causes a displacement in the direction that at least part of the force is acting

Front

Work-Energy Theorem

Back

Front

Mechanical Energy

Back

Energy possessed by an object due to its motion or position.

The sum of the kinetic and any potential (positional) energy (gravitational, elastic, etc.).

Front

Net Work

Back

Front

Usable Energy

Back

Any 'form' or storage area of energy that can be efficiently captured, harnessed, and used to do work.

Front

Dissipated Energy

Back

Energy that has been transferred in a way that it is 'lost' from the system and cannot be recaptured in a usable way.

Usually to energy storage areas like heat, sound, or internal changes like deformation.

Front

Power

Back

Front

Efficiency

(Mechanical Efficiency)

Back

Front

Simple Machine

Back

Basic devices with few or no moving parts designed to change the magnitude/direction of a force and make a task easier to do.

6 Most common types:

inclined plane

wedge

screw

lever

pulley

wheel-and-axle