Physics formulas Flashcards
Formula of density
M/V, Where ‘M’ is mass and ‘V’ is volume.
Formula for velocity
d/t, Where ‘d’ is displacement and ‘t’ is time.
Formula for acceleration
Change in velocity/time.
Formula for Force/Tension
m.a, where ‘m’ is mass and ‘a’ is acceleration.
Formula for Work done/Energy/Torque
F.s, where ‘F’ is Force and ‘s’ is displacement.
Formula for Power
W/t, where ‘W’ is Work done and ‘t’ is time.
Formula for Pressure
Force/Area.
Formula for Momentum (p)
m.v, where ‘m’ is mass and ‘v’ is velocity.
Formula for Impulse
Ft, where ‘F’ is Force and ‘t’ is time.
Formula for n1
n2[M1/M2][L1/L2][T1/T2]
Formula for Angular velocity (w)
Q/t
Formula for potential energy
mgh
Formula for Average Speed (Diff. time)
2v1v2/v1+v2
Formula for Average Velocity
x2-x1/t2-t1
Formula for Average Speed (Same time)
v1+v2/2
If y= u^v
dy/dx= vu^v-1*du/dx
If y= uv
dy/dx= udv/dx + vdu/dx
If y= u/v
dy/dx= [vdu/dx - udv/dx] / v^2
Formula for Resultant |R|
√a2+b2+2abCosQ
Formula for Direction of resultant
Tan phi= bsinQ/a+bCosQ
Formula for cross product
absinQ n^
Area of parallelogram
|a×b|
Area of triangle
1/2 |a×b|
Unit Vector
n^ = a×b/|a×b|
Sine Angle
|a×b| / |a|×|b|
Time of flight
t= 2usinQ/g
Horizontal range
R= u²Sin2Q/g
Height Max
u²Sin²Q/2g
Time of projectile
t= √2h/g
Range
u×√2h/g
Velocity at the end
√u²+2gh
Angular velocity
V= Wr
W
2πf
Angular Acceleration (Alpha)
a= Alpha× R
Impulse (J)
J= m(v2-v1), P2-P1, ∆P
Tension, at rest
N= mg
Tension, when moving upward
N= m(a+g)
Tension, when moving downward
N= m(g-a)
Tension, freefall
0
acc., when connected bodies
g(m1-m2)/(m1+m2)
Tension, when connected bodies
2m1m2g/m1+m2
Coefficient of friction(μ)
μ= f/N
Work done
F.s
Centre of mass for 1D
m1r1+m2r2/m1+m2
Centre of mass for X
m1x1+m2x2+m3x3/m1+m2+m3
Centre of mass for Y
m1y1+m2y2+m3y3/m1+m2+m3
Torque
r×F
Angular momentum
L= r×P
Moment of inertia
I= mr²
Universal law of gravitation
F= Gm1m2/r², G= 6.67×10-¹¹
Gravitational acceleration(g)
g= GM/r²
Escape velocity(Ve)
Ve= √2g(r+h)