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Blababa [14]
2 years ago
13

As a block falls through the air by 40 meter it does work equal to -1800 joule. Determine the mass of a block.

Physics
1 answer:
kari74 [83]2 years ago
3 0

Answer:

m = 4.5 kg

Explanation:

w = - 1800 j

Fd = - 1800 j

mgd = - 1800 j

m = - 1800 ÷(gd)

m = - 1800 ÷( 10×-40)

m = 4.5 kg

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Answer:

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Explanation:

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LUCKY_DIMON [66]

Hi there!

We can use the work-energy theorem to solve.

Recall that:

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The initial kinetic energy is 0 J because the crate begins from rest, so we can plug in the given values for mass and final velocity:

W = \frac{1}{2}(50)(5.61^2) = 786.8025 J

Now, we can define work:

\large\boxed{W = Fdcos\theta}}

Now, plug in the values:

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Solve for theta:

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4 0
2 years ago
The battery of a flashlight develops 3 V, and the current through the bulb is 200 mA.What power is absorbed by the bulb?
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Hope this helps!

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