Question

A machine raised a load of 360N through a distance of 0.2m. The effort, a force of 50N moved 1.8m during the process. Calculate the efficiency of the machine.

Select one:
a. 40%
b. 100%
c. 80%
d. 60%

Answer 1

c. 80%

Step-by-step explanation:

Given;

load raised by the machine, L = 360 N

distance through which the load was raised, d = 0.2 m

effort applied, E = 50 N

distance moved by the effort, e = 1.8 m

The efficiency of the machine is calculated as follows;

`Efficiency = ( 0utput \ work )/(1nput \ work) * 100\% \\\\Efficiency = (Load \ * \ distance \ moved \ by \ load )/(Efort \ * \ distance \ moved \ by \ effort) * 100\%\\\\Efficiency = (360 * 0.2)/(50 * 1.8) * 100\%\\\\Efficiency =80\%`

Therefore, the efficiency of the machine is 80%