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riadik2000 [5.3K]
3 years ago
6

How much work is done by a crane that lowers 1000N of material a distance of 150?

Physics
2 answers:
Norma-Jean [14]3 years ago
7 0
The formula is ''w=fd''

So according this fromula we excersise:

W= (1000N) (150)

So we multiply ''1000'' times ''150''

W= 150,000J

Hope i helped! If you need anything else ask me! :)
Illusion [34]3 years ago
5 0

You haven't said what the 150 are.
I'm going to assume that they're meters,
and then I'll answer the question that I invented.


                     Work = (force) x (distance)

                              = (1000 N) x (150 meters)  =  150,000 joules .

You said the material is "lowered".  I'm picturing this really
gigantic construction crane, with a pallet of bricks hanging
from its cable, and the crane slowly lets the bricks down
150 meters to the ground.

-- The 150,000 joules of work is done by gravity.

-- The gravitational potential energy of the bricks
    decreases by 150,000 joules.

-- The crane does no work.

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SpyIntel [72]

Answer:

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Explanation:

a.)

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Given data

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b.)

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     Time = t = 8 min = 480 s

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             a = \frac{v_{2} - v_{1} } {t}  

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c.)

    Given data

As the space shuttle is at rest for first 2 min then start moving, So initial velocity is zero

    Initial velocity = v₁ = 0 ms⁻¹

    Final velocity  = v₂ = 4600 ms⁻¹

     Time = t = 10 min = 600 s

By the definition of Acceleration (a)

             a = \frac{v_{2} - v_{1} } {t}  

             a = \frac{4600 - 0 } {600}

                     a = 7.67 ms⁻²

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