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agasfer [191]
3 years ago
15

Power output of an engine is with work (w=60,000) during 60 s Calculate the power of this work?*

Physics
1 answer:
igomit [66]3 years ago
6 0

Answer:

<em>The power output of the engine is 1,000 Watt</em>

Explanation:

<u>Mechanical Power </u>

Power is the amount of energy transferred or converted per unit of time. In the SI, the unit of power is the watt, equal to one joule per second.

The power can be calculated as:

\displaystyle P=\frac {W}{t}

Where W is the work and t is the time.

The engine does a work of W=60,000 J during t=60 s. Calculate the power:

\displaystyle P=\frac {60,000}{60}

P = 1,000 Watt

The power output of the engine is 1,000 Watt

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PART B) To solve this section it is necessary to apply the concepts related to the conservation of energy both potential (simple harmonic) and kinetic in the spring.

\frac{1}{2}kA^2 = \frac{1}{2}mv^2 + \frac{1}{2} kY^2

Where,

k = Spring constant

m = mass

y = Vertical compression

v = Velocity

This expression is equivalent to,

kA^2 =mV^2 +ky^2

Our values are given as,

k=1700 N/m

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Replacing we have,

1700*A^2=5.3*1.7^2 +1700*(0.045)^2

Solving for A,

A^2 = \frac{5.3*1.7^2 +1700*(0.045)^2}{1700}

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PART C) Finally, the total mechanical energy is given by the equation

E = \frac{1}{2}kA^2

E=\frac{1}{2}1700*(0.105)^2

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