Question

Obtain the relation between the SI unit and CGS unit of torque.

Answer 1

`"S.I. Unit of torque"/"C.G.S. unit of torque"`

= `(kg xx m^2 xx s^-2)/(g xx cm^2 xx s^-2)`

= `((kg)/g) (m/(cm))^2`

= 10³ × (10²)²

= 10³ × 10⁴

= 10⁷

∴ S.I. unit of torque (N m) = 10⁷ C.G.S unit of torque (dyne cm)

Or 1 N m = 10⁷ dyne cm.