2. A can filled with sand has a mass of 0.65kg is swung overhead in a horizontal circle of radius 0.70m at a constant rate of 2.5 revolutions per second. Find the angular momentum of the rock.

Answer;

≈ 5 Kgm²/sec

Explanation;

Angular momentum is given by the formula

L = Iω, where I is the moment of inertia and ω is the angular speed.

I = mr², where m is the mass and r is the radius

= 0.65 * 0.7²

= 0.3185

Angular speed, ω = v/r

= (2 * 3.142 * r * 2.5) r

= 15.71

Therefore;

Angular momentum = Iω

= 0.3185 * 15.71

= 5.003635

≈ 5 Kgm²/sec