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kodGreya [7K]
3 years ago
11

A crane lifts an air conditioner weighing 800 Newtons up to the roof of a building in New York City. It took one minute to raise

it 200 meters. How much work was accomplished? How much power was required? Work = 160,000 Nm, Power = 160, 000 Nm/sec Work =160,000 Nm, Power = 2667 Nm/sec Work = 800n-m, Power= 4 Nm/sec
Mathematics
1 answer:
tia_tia [17]3 years ago
4 0

Answer:

160,000 Nm

2667 Nm/sec

Step-by-step explanation:

Work = weight * distance

= 800 * 200

= 160,000 Nm

Power = rate of work done

= 160,000 / 60

=  2667 Nm/sec

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Here , we are provided with a table which shows 5 consecutive terms of an arithmetic sequence . But before solving further , let's recall that ;

The n'th term of a Arithmetic Sequence let's say it be {\sf T_n} is given by ;

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Now , by using the above formula , 5th term can be written as ;

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Putting the values and transposing 1st term to RHS , we have ;

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{: \implies \quad \sf T_{2}= T_{1}+(2-1)d}

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{: \implies \quad \sf T_{3}= T_{1}+(3-1)d}

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{: \implies \quad \sf T_{3}= 8-6}

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{: \implies \quad \sf T_{4}= 8-9}

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Now , The given table can be written as ;

{\begin{array}{|c|c|c|c|c|c|}\cline{1-6} \bf n & \sf 1 & 2 & 3 & 4 & 5 \\ \cline{1-6} \bf T_{n} & \sf 8 & 5 & 2 & -1 & -4 \end{array}}

Note :- Kindly view the answer from web , if you're not able to see the full answer from here ;

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