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Viktor [21]
3 years ago
12

BRAINLIEST HERE!!!

Physics
2 answers:
umka21 [38]3 years ago
8 0

Answer:

V, W, and Y.

Explanation:

For a particle in uniform circular motion, the velocity vector remains constant in magnitude, but it continuously changes its direction. The velocity is tangent to the circle. The velocity vectors are all the same length.

Hope this helps ☝️☝☝

Vlad [161]3 years ago
8 0

Answer:

V

W

Y

Explanation:

In uniform circular motion the speed of the object must be uniform so the tangential velocity vector must be of equal lengths

Now the acceleration in such motion must be towards the center of the circle with same magnitude

so the vector towards the center of the circle must be of equal lengths always

so here in this way correct representation of uniform circular motion is given as

V

W

Y

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Answer:

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The design of a 60.0 cm industrial turntable requires that it has a kinetic energy of 0.250 j when turning at 45.0 rpm. What mus
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Answer:

The moment of inertia of the turntable about the rotation axis is 0.0225 kg.m²

Explanation:

Given;

radius of the turnable, r = 60 cm = 0.6 m

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The rotational kinetic energy is given as;

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\omega = 45 \frac{rev}{\min} \times \frac{2 \pi \ rad}{1 \ rev} \times \frac{1 \ \min}{60 \ s} \\\\\omega = 4.712 \ rad/s

E = \frac{1}{2} I \omega ^2\\\\I = \frac{2E}{\omega ^2} \\\\I = \frac{2 \ \times \ 0.25}{(4.712)^2} \\\\I = 0.0225 \ kg.m^2

Therefore, the moment of inertia of the turntable about the rotation axis is 0.0225 kg.m²

5 0
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