Physics formulas Flashcards by Kanak Chaudhary | Brainscape

Q

Formula of density

A

M/V, Where ‘M’ is mass and ‘V’ is volume.

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Q

Formula for velocity

A

d/t, Where ‘d’ is displacement and ‘t’ is time.

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Q

Formula for acceleration

A

Change in velocity/time.

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Q

Formula for Force/Tension

A

m.a, where ‘m’ is mass and ‘a’ is acceleration.

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Q

Formula for Work done/Energy/Torque

A

F.s, where ‘F’ is Force and ‘s’ is displacement.

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Q

Formula for Power

A

W/t, where ‘W’ is Work done and ‘t’ is time.

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Q

Formula for Pressure

A

Force/Area.

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Q

Formula for Momentum (p)

A

m.v, where ‘m’ is mass and ‘v’ is velocity.

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Q

Formula for Impulse

A

Ft, where ‘F’ is Force and ‘t’ is time.

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Q

Formula for n1

A

n2[M1/M2][L1/L2][T1/T2]

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Q

Formula for Angular velocity (w)

A

Q/t

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Q

Formula for potential energy

A

mgh

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Q

Formula for Average Speed (Diff. time)

A

2v1v2/v1+v2

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Q

Formula for Average Velocity

A

x2-x1/t2-t1

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Q

Formula for Average Speed (Same time)

A

v1+v2/2

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Q

If y= u^v

A

dy/dx= vu^v-1*du/dx

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Q

If y= uv

A

dy/dx= udv/dx + vdu/dx

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Q

If y= u/v

A

dy/dx= [vdu/dx - udv/dx] / v^2

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Q

Formula for Resultant |R|

A

√a2+b2+2abCosQ

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Q

Formula for Direction of resultant

A

Tan phi= bsinQ/a+bCosQ

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Q

Formula for cross product

A

absinQ n^

Q

Area of parallelogram

A

|a×b|

Q

Area of triangle

A

1/2 |a×b|

Q

Unit Vector

A

n^ = a×b/|a×b|

Q

Sine Angle

A

|a×b| / |a|×|b|

Q

Time of flight

A

t= 2usinQ/g

Q

Horizontal range

A

R= u²Sin2Q/g

Q

Height Max

A

u²Sin²Q/2g

Q

Time of projectile

A

t= √2h/g

Q

Range

A

u×√2h/g

Q

Velocity at the end

A

√u²+2gh

Q

Angular velocity

A

V= Wr

Q

W

A

2πf

Q

Angular Acceleration (Alpha)

A

a= Alpha× R

Q

Impulse (J)

A

J= m(v2-v1), P2-P1, ∆P

Q

Tension, at rest

A

N= mg

Q

Tension, when moving upward

A

N= m(a+g)

Q

Tension, when moving downward

A

N= m(g-a)

Q

Tension, freefall

A

0

Q

acc., when connected bodies

A

g(m1-m2)/(m1+m2)

Q

Tension, when connected bodies

A

2m1m2g/m1+m2

Q

Coefficient of friction(μ)

A

μ= f/N

Q

Work done

A

F.s

Q

Centre of mass for 1D

A

m1r1+m2r2/m1+m2

Q

Centre of mass for X

A

m1x1+m2x2+m3x3/m1+m2+m3

Q

Centre of mass for Y

A

m1y1+m2y2+m3y3/m1+m2+m3

Q

Torque

A

r×F

Q

Angular momentum

A

L= r×P

Q

Moment of inertia

A

I= mr²

Q

Universal law of gravitation

A

F= Gm1m2/r², G= 6.67×10-¹¹

Q

Gravitational acceleration(g)

A

g= GM/r²

Q

Escape velocity(Ve)

A

Ve= √2g(r+h)