Trusted by millions of Kenyans
Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

A certain machine raises 2.0 tonnes of water through 22 metres. If the efficiency of the machine is 80%, how much work is done on the machine?

A certain machine raises 2.0 tonnes of water through 22 metres. If the efficiency of the machine is 80%, how much work is done on the machine?

Answers


John
efficiency = $\frac{work\,output}{work\,input}$ x 100

work input = $\frac{2000\times 22}{0.8}$

= 550, 000 J
johnmulu answered the question on February 14, 2017 at 12:35

Answer Attachments

Exams With Marking Schemes

Related Questions