Question on: JAMB Physics - 1998
In a wheel and axle mechanism the diameters of the wheel and axle are 40cm and 8cm respectively. Given that the machine is 80% efficient, what effort is required to lift a load of 100N?
A
20N
B
25N
C
50N
D
80N
Ask EduPadi AI for a detailed answer
Correct Option: B
Efficiency = (\frac{\text{work done by hand}}{\text{work done by effort}})
80 = (\frac{100{\times 8}}{E {\times} 40}) x (\frac{100}{1})
E = 25N
Add your answer
Please share this, thanks!
No responses