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isaiahmyers3410
07.07.2020 •
Physics
The disks you will be using in the lab have the following parameters. All disks are solid with outer radius R1 = 0 0632 m and inner radius R2 = 0 0079 m The masses of the disks are: MT starless steel = 1357kg, MBottom starless stee,ã¼1.344kg. Calculate the moments of inertia of the disks.
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Ответ:
MT disc I = 2,752 10-3 kg m²
MB disc I = 2,726 10⁻³ kg m²
Explanation:
The moment of inertia given by the expression
I = ∫ r² dm
for bodies with high symmetry it is tabulated
for a hollow disk it is
I = ½ M (R₁² + R₂²)
let's apply this equation to our case
disc MT = 1,357 kg
I = ½ 1,357 (0.0079² + 0.0632²)
I = 2,752 10-3 kg m²
disk MB = 1,344 kg
I = ½ 1,344 (0.0079² + 0.0632²)
I = 2,726 10⁻³ kg m²
Ответ:
Explanation:
given,
weight of the man = 680 N
weight of the woman = 500 N
mass of man =![\dfrac{680}{9.8}](/tpl/images/0438/0300/2aa1f.png)
M_m = 69.4 Kg
mass of woman
=![\dfrac{500}{9.8}](/tpl/images/0438/0300/978e4.png)
M_w = 51 Kg
ratio of man's kinetic energy Km to that of the woman Kw
momentum is same