Mech Engg.

1. S.No
Derived Physical
Quantity Formula
Dimensional
Formula
S.I Unit of
physical
quantity
4. Specific Gravity
[ ] No units
7. Velocity
m/sec
8. Speed
m/sec
9. Areal velocity
10. Acceleration
11. Linear momentum
kg m/sec
12. Force
kg-m/ or
Newton
13. Weight w=mg
kg-m/ or
Newton
14.
Moment of
force/Torque/Couple
kg
15. Impulse
kg m/sec or Ns
16. Pressure
N/ or Pa
17. Work
Nm or Joule
18. Kinetic Energy
joule
19. Potential Energy mgh
joule
20.
Gravitational
constant
21.
Gravitational field
strength
22.
Gravitational
Potential
23. Force constant (k)
24. Power
W or J/sec

2. 25.
Moment of Inertia (
I )
kg
26. Stress
N/ or Pa
27. Strain
No units
28.
Modulus of
Elasticity
N/ or Pa
29. Poission’s Ratio σ = -1
No units
30. Velocity gradient
31.
Coefficient of dynamic
viscosity
kg (or) N-sec/$
latex m^2$
(or)pascal-sec
(or)poiseuille
32. Surface Tension ,N/m
33. Angular displacement ( ) no Units
34. Angular velocity(ω) rad/sec
35. Angular acceleration(α) rad/
36. Angular momentum Iω
37. Angular Impulse Iω
38. Temperature
or K
kelvin or degree
Celsius