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The world’s tallest lighthouse is located in Japan and is 106 m tall. A winch that provides 3.00 × 10^2 W of power is used to raise 14.0 kg of equipment to the lighthouse top at a constant velocity. How long does it take the equipment to reach the lighthouse top?

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To find out how long it takes for the equipment to reach the lighthouse top, we can use the work-energy principle which states that the work done on an object is equal to the change in its kinetic energy. Since the velocity is constant, the change in kinetic energy is zero.

Therefore, the work done on the object is equal to the force required to lift it multiplied by the distance it is lifted. We can use the formula:

Work = force x distance

We know that the work done is equal to the power multiplied by the time, so we can use this formula as well:

Work = Power x time

We can use these two formulas to find the time it takes to raise the equipment to the lighthouse top:

force = mg = (14.0 kg)(9.8 m/s^2) = 137.2 N

distance = 106 m

Work = force x distance = 137.2 N x 106 m = 14,532.8 J

Power = 3.00 x 10^2 W

We can now substitute these values into the second formula:

Work = Power x time

14,532.8 J = 3.00 x 10^2 W x time

time = Work / Power = (14,532.8 J) / (3.00 x 10^2 W) = 484.4 seconds

So, it takes the equipment approximately 484.4 seconds (8 minutes and 4.4 seconds) to reach the lighthouse top.

I hope this helps :)

User Alok P
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