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krek1111 [17]
3 years ago
13

In your physics lab you are given a 10.1-kg uniform rectangular plate with edge lengths 68.7 cm by 47.5 cm. Your lab instructor

requires you to rotate it about an axis perpendicular to its plane and passing through one of its corners and then prepare a report on the project. For your report you will need the plate's moment of inertia with respect to this axis. Calculate it here first.
Physics
1 answer:
VladimirAG [237]3 years ago
4 0

Answer:

2.35 kgm^2

Explanation:

we take length 68.7 cm as x-axis and 47.5 cm as y-axis then the axis about which we have to find out moment of inertia will be z-axis.

moment of inertia about x-axis

I_x = ML^2 /3 = 10.1\times 0.4752 /3 = 0.7596 kg-m2

I_y = 10.1\times 0.6872 / 3 = 1.5889 kgm^2

by perpendicular axis theorem

I_z = I_x + I_y = 0.7596 + 1.5889 = 2.35 kgm^2

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