# physics

Classified in Physics

Written at on English with a size of 1.56 KB.

Review

1 Balancing Moments

-seesaw: sube y baja 4

-Perpendicular: At a 90 degree angle to someting

-Newton: Te unit of measurement of force

-Clockwise-In te same direction as temovement of te ands on a clock

-Counterclockwise: in te opposite direction to te movement of te ands on a clock

Diagram

a-You ave to calculate te moment

b-Te weel turns more easily wen you spin it from near te rim. Te distance

M=fd                                              F=30N       M=fd

Left is 2FI  same result                    d=15cm     M=(30) (0.15)=4.5

Rigt is 2dF same result                  0.15m        M=4.5Nm

2 Making a scale

-Spring constant: A measure of ow stiff or strong a spring is

-Extension: Te increase in te longt of someting

-Elastic: A material able to resume its original sape after being stretxed or compressed

-Elastic Limit: Te extent to wix an object can be stretxed witout permanently alterning its sape or size

Diagram

a- It refers on ow stiff or strong a spring is

b- Its stiff because a spring wit a ig spring constant requires more force to extend