alexa167 alexa167
  • 14-11-2018
  • Physics
contestada

I'm not sure what to use help me please

Im not sure what to use help me please class=

Respuesta :

Branta Branta
  • 24-11-2018

Answer:

Mass of the ring is 2.5 kg.

Given:

Moment of inertia of a ring = 0.4 kg.[tex]m^{2}[/tex]

Radius = 40 cm = 0.4 m

To find:

Mass of the ring = ?

Formula used:

I = m [tex]r^{2}[/tex]

Where I = moment of inertia

r = radius of the ring

m = mass of the ring

Solution:

Moment of inertia of a ring is given by,

I = m [tex]r^{2}[/tex]

Where I = moment of inertia

r = radius of the ring

m = mass of the ring

0.4 = m ×0.4×0.4

m = 0.4/(0.4×0.4)

m = 1/0.4

m = 2.5 kg

Mass of the ring is 2.5 kg.

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