A wheel and axle have radii 80cm and 10cm r..

Question 1 Report

A wheel and axle have radii 80cm and 10cm respectively. If the efficiency of the machine is 0.85, an applied force of 1200N to the wheel will raise a load of

8.0N

6.8N

8160N

9600N

Answer Details

Efficiency = m.A x $\frac{1}{V . R}$ x 100%

85 = $\frac{l o a d}{1200}$ x $\frac{10}{80}$ x $\frac{100}{1}$

load = 8160N

Read lesson note on Simple Machines (JAMB)

Simple Machines

View Answer

A wheel and axle have radii 80cm and 10cm respectively. If the efficiency of the machine is 0.85, an applied force of 1200N to the wheel will raise a load o...