Mechanics I
Basic Physical Quantities- There are seven basic physical quantities from which all other units of measurement can be derived. They are:
- Time (s)
Length (m)
Luminous intensity (cd)
Mass (kg)
Number of particles (moles)
Temperature (K)
Charge (C)
- v = u + at
v² = u² + 2as
s = ut + ½at²
- 1. inertia
2. F = ma
3. action & reaction
- F = Gm1m2/r2
- Centripetal acceleration is given by
a = v2/r
Centripetal force is given by
F = ma = mv2/r
- Static friction = Force acting normally to surface x coefficient of static friction
= FN mS
Dynamic friction = Force acting normally to surface x coefficient of dynamic friction
= FN mD