physics+is+easy

=﻿circalar motion notes=

A-xis- straight line around which rotation takes place

Rotation- object turns around an internal axis

Linear speed -distance time tangential speed -along a circular path

Rotations speed number of rotations per unit of time

centripetal force -force that causes an object to follow circular path

centripetal acclerration -always points towards the center

Gravity is a constant force... wieght is the pull of gravity...

=﻿Newtons law of universal gravitation= Newtons conclude that any two object in the universal exert gravity mass.. as the mass of either objects or both objects increases..

effect of mass of gravity 1m0 1f 01m 2M0 2F 02M 3m0 3F 03M universal gravitation of distance as the distance seperation two objects increase the force of altraction is exponentially smaller

=﻿Friction= When a force is a relative motion,it is kinetic friction force. kinetic friction force Ff=mkfn static friction force all listed coefficents are less then 1 the forces are Ff and FN opposing motion is friction force direct and static force is static friction force..

=Coulombs laws/electric fields= The relationship among electrical forces,charges,and distance its like newtons law of gravity ,electrical forces can be attractive or repulsive

Discovred by french.. coulombs law F=kqaqb over 2 force (N) Q=charge of coulumb D=distance (M) The si unit measures for electrical charge is a coulumb charge of 1 proton... The charge (Q) is not a vectof a partical therefore when described as a positive or negative that tells whether it is a proton or electron but is not magnitude of the charge Do nmot put negatives in a charge...

Grounding - Touch body to earth to eliminate excess charge.. Direction of arrows indicate the charge of the field two charges are separated by 0.03M =Electrical Fields= a vector that indicates the relates the force exerted on a charge

The magnitude of the electrical field...