Force of a spring (The negative sign reminds you that the spring force is a restoring force, always
acting toward the equilibrium point.)
Potential energy of a spring
Period in terms of angular frequency and standard frequency
Period of a mass on a spring
Period of a pendulum
Gravitational force between two massive objects
Gravitational potential energy between two massive objects (Don’t use unless an object is far away
from a planet’s surface.)
Electricity and Magnetism
Electric force between two point charges
Definition of electric field
Gauss’s law (Though you should never actually take an integral when using this.)
How to find electric field in terms of potential
Potential energy in terms of potential, and then potential energy between two point charges (This line
on the equation sheet really has two different equations. PE = qV is always valid, but PE = kqq/r
is only valid between two point charges.)
The electric potential at some point due to surrounding point charges
Definition of capacitance
Capacitance of a parallel-plate capacitor with a dielectric substance of constant κ added
How to add parallel capacitors
How to add series capacitors
Definition of current
Energy stored on a capacitor
Resistance of a wire
Ohm’s law
How to add series resistors
How to add parallel resistors
Power in an electrical circuit
Magnetic force on a charge
Ampére’s law
Magnetic force on a wire
Magnetic field of a solenoid
Magnetic flux
Induced EMF
Voltage across an inductor
Energy stored in an inductor
