Physics Formulae Flashcards
1
Q
1 kgf = ? N
A
1 kgf = 9.8 N
2
Q
1 N = ? Dyne
A
10^5
3
Q
Impulse of a Force
A
F x t, Newton second (Ns).
Equal to change in momentum (no rate)
4
Q
Weight
A
m x g
5
Q
Universal Law Of Gravitation
A
G x m1 x m2 / r^2
6
Q
Value of G
A
6.67 x 10^-11
7
Q
g at h below earth
A
g x [1 - h/r]
8
Q
g at height h above sea level
A
g x [1 - 2h/r]
9
Q
1 radian
A
57.3 degrees
10
Q
Angular speed
A
θ/t = 2π x f
11
Q
Angular displacement
A
θ
12
Q
Period
A
T
13
Q
Frequency
A
1/t
14
Q
Arc Length
A
Radius x Angle singendes at centre of curvature
15
Q
Linear velocity and angular velocity
A
v = ⍵ x r
16
Q
Centripetal acceleration
A
Particle of mass ‘m’ moving along the circumference of a circle of radius r with uniform speed v:-
aͨ = v^2 / r = ⍵^2 / r
17
Q
Centripetal force
A
Force acting on a particle in uniform circle motion and directed toward the centre:
F = m x aͨ
