# What is the angular momentum of an object with a mass of 7 kg that moves along a circular path of radius 12 m at a frequency of  4 Hz ?

## I

Dec 18, 2016

The angular momentum is $= 25333 k g m {s}^{- 1}$

#### Explanation:

The angular momentum is

$L = I \omega$

Where $I =$ moment of inertia of the mass

And $\omega =$ angular velocity

$I = m {r}^{2}$

$I = 7 \cdot {12}^{2} = 1008 k g {m}^{2}$

$1 H z = 2 \pi$ rad

So, $\omega = 4 \cdot 2 \pi r a {\mathrm{ds}}^{- 1}$

The angular momentum is $= 1008 \cdot 8 \pi = 25333 k g m {s}^{- 1}$