AP Physics 1 - Exam Review

Point Mass Inertia

Point Mass Inertia

I=mr²

Hoop Mass/Hollow Cylinder Hoop

I=mr²

Solid Cylinder

I=1/2mr²

Solid Sphere

I=2/5mr²

Hollow Sphere

I=2/3mr²

Period over radius

T³/r²=T³/r²

Elastic

bounce off each other

Inelastic

Stick together

v=

d/^t or x-x_o/^t

a=

^v/^t

4th Kinematic

x-x_o=((v+v_o)/2)t

Acceleration in the y

-9.8 m/s²

How is gravitational force proportional to masses

Fg&m1m2 directly proportional

How is gravitational force proportional to the radius

Fg&(1/r²) aka inverse squared

Vorbit

=sqrt(GM/r),

a_{gravitational}

(GM)/r²

GMT²=

=4pi²r³

mg=

=fg

static friction max=

=(MUs)(Fn)

kinetic friction equat

=(MUk)(Fn)

What motion is static friction

not sliding

What motion is kinetic friction

sliding

is static friction greater or less than kinetic

greater >

angular velocity=

=(2pir)/T

other a_c=

=(4pi²R)/T²

P=

=^E/^T or W/^T

What is impulse

the change in momentum

1hp=550ft*lbs/s=

=745.7W

Area below force vs displacement graph

Work

J(impulse)=^p=

=F^t

conservation of momentum

momentum before equals momentum after

no mo

no go

angular displacement

change in theta

to a circle, velocity is

perpendicular to the radius

to a circle acceleration is

inwards

linear to angular velocity

v=rw

Torque=

perpendicular force * length

Work_rotational=

=Torque*theta