Question

Who will answer this question correctly I will mark as brainliest answer
1.A pump discharges 500 kg of water per minute through a long into a tank
20 m above the tank. What is the useful work done by the pump in 1 hour
1) 5870 kJ 2) 5880 kJ
3) 5840 kJ
4) 5860 kJ​

Answer 1

The formula of work is as follows :

Work = Force × Distance

Given mass = 500 kg we can get the force.

Force = 500 × 10 = 5000 N

This is force in Newtons.

We have :

5000 N per minute

In one minute the work done is:

5000 × 20 = 100000 Joules

We need work done in one hour.

In one hour the work done is :

100000 × 60 = 6000000 Joules

We can make this smaller by converting to kilo joule's.

1000 joule's = 1 kilo joule

6000000/1000 = 6000

= 6000 Kilo Joules

Answer 2

Answer:

6000kJ

Step-by-step explanation:

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