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Hitman42 [59]
3 years ago
8

A 500kg elevator is raised to a height of 10 m in 10 seconds. Calculate the power of the motor.

Physics
1 answer:
Hunter-Best [27]3 years ago
3 0

Answer:

Correct answer: Third statement  P = 4900 W

Explanation:

Given:

m = 500 kg  the mass of the elevator

h = 10 m  reached height after t = 10 seconds

P = ? power of the motor

The formula for the calculating power of the motor is:

P = W / t

since work is a measure of change in this case of potential energy then it is:

W = ΔEp = Ep - 0 = Ep

In this case we must take g = 9.81 m/s²

Ep = m g h = 500 · 9.81 · 10 = 49,050 W ≈ 49,000 W

Ep ≈ 49,000 W

P = Ep / t = 49,000 / 10 = 4,900 W

P =4,900 W

God is with you!!!

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Answer:

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Explanation:

Given the following data;

Frequency, F = 10 Hz

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We know that pie, π = 22/7

To find the mass, we would use the following formula;

F = 1/2π√(k/m)

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10 = 1/2 * 22/7 * √250/m

10 = 22/14 * √250/m

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140 = 22 * √250/m

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140/22 = √250/m

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Taking the square of both sides, we have;

6.36² = (√250/m)²

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Cross-multiplying, we have;

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