Mechanics Formulas Flashcards
Acceleration
t
Speed
d ÷ t
Force
F = ma —–> m(v-u) ÷ t
Weight
mass x gravitational field strength
mg
Density
p = m ÷ v
p = m/v
where m= mass and v= volume
Moment
M = f x d
where f = force
d = perpendicular distance
Pressure
P = F/A
where f = force
A = surface area
Pressure (2)
P = pgh
where p = density
g = gravity
h = liquid height
P1V1 (pressure1 x volume1)
P1V1 = P2V2
Work Done
W = F x d
where f = force
d = distance travelled
Kinetic Energy
Eĸ = 1/2 mv²
where m = mass
v = speed
Change in gravitational potential energy
ΔEρ = mgΔh
Potential energy
PE = mgh
where m = mass
g = gravity
h = vertical height
Energy
E = Pt
where p = power
t = time
Power
P = E ÷ t
where e = energy
t = time
Power (2)
P = W ÷ t
where W = work done
t = time
Power (3)
P = Fv
where F = force
v = velocity
Velocity
Disp ÷ Time
