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faust18 [17]
4 years ago
9

a student sees a newspaper ad for an apartment that has 1330 square feet of floor space how many square meters are there?

Physics
1 answer:
sergey [27]4 years ago
3 0
123.561 square meters
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A constant torque of 3 Nm is applied to an unloaded motor at rest at time t = 0. The motor reaches a speed of 1,393 rpm in 4 s.
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Answer:

The moment of inertia of the motor is 0.0823 Newton-meter-square seconds.

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From Newton's Laws of Motion and Principle of Motion of D'Alembert, the net torque of a system (\tau), measured in Newton-meters, is:

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Where:

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\alpha - Angular acceleration, measured in radians per square second.

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\alpha = \frac{\omega - \omega_{o}}{t} (2)

Where:

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\omega - Final angular speed, measured in radians per second.

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\alpha = \frac{145.875\,\frac{rad}{s}-0\,\frac{rad}{s}}{4\,s}

\alpha = 36.469\,\frac{rad}{s^{2}}

I = \frac{\tau}{\alpha}

I = \frac{3\,N\cdot m}{36.469\,\frac{rad}{s^{2}} }

I = 0.0823\,N\cdot m\cdot s^{2}

The moment of inertia of the motor is 0.0823 Newton-meter-square seconds.

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