Physics, asked by ayan7456, 1 year ago

A machine is used to lift a 100 kg stone to a vertical 20 m in 80 sec.
find the useful power of the machine. if the efficiency of the machine is 75%
, find the electrical power, being consumed by the machine.

[By Clear step-by-step procedure]​

Answers

Answered by Surajsah977
2

Mass=100kg

Vertical height,S=20metre

Time=20s to lift through distance S.

  • Efficiency,n= 75%
  • =0.75

By using the formula,

Power,p=work done/time taken

=W/t

since, W=force*️⃣ displacement

= F✖️S. or,F =mg

So,P=F✖️S t 75%

= mass gravity S t 0.75

= 9.8 20 80✖️ 0.75

=183.75 watt

Answered by ratheemimansha
1

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