Week - 1 - Consistency of Units

1. Kg cm ms - 1kg, 100cm, 1000ms

2. kg cm s - 1Kg, 100cm,1s

3.gm mm ms - 1000g, 1000mm, 1000ms

4.kg m s - 1kg, 1m, 1s

5.g cm s - 1000g, 100cm,1s

6.g cm us - 1000g, 100cm, 1000000s (1e-6)

7.g mm s - 1000g, 1000mm, 1s

8. ton mm s - 0.001ton, 1000mm, 1s

1ton =1000kg

9. Slug ft s - 0.06slug, 3.33ft, 1s

1slug =14.5kg, 1ft = 30cm =0.3m,

10. kg mm s = 1kg, 1000mm, 1s

11. g cm ms - 1000g, 100cm, 1000ms

12. kg mm ms = 1kg, 1000mm, 1000ms

FORCE = 1N = 1kg-m/s = Force required to 1Kg mass to a distance of 1m in time of 1s is 1Newton.

Stress = 1Pa = 1 N/m^2 =1e-6 N/mm^2=1e-3 N/cm^2

Energy = 1Nm= 1Joule = 1000Nmm = 100Ncm

Density = 1kg/m^3 = 1000g/m^3 = 1e-6 Kg/mm^3 = 1e-3 ton/mm^3

Young's Modulus = 210GPA = 210 e9 N/m^2 = 210000 N/mm^2

Velocity = 56.33 KMPH = 56.33 *1000 /3600 = 15.64 m/s

Gravity = 9.81m/S^2 = 9.81*1000/(1000)^2 = 0.00981 mm/ms^2