Question

w strong are you? Could you turn a moving car with just your own strength? No way! If a normal driver inputs about 50 N of force to turn a car, the output force is 3,750 Newtons! What is the MA of the steering wheel?

Answer 1

The mechanical advantage of a simple machine is the measure of its amplified force gain.

The mechanical advantage  is defined as the force amplified by a machine to the force required to generate such output.

$Mathematically\ mechanical\ advantage\ MA=\frac{F_{o}} {F_{i}}$

$F_{o} \ and\ F_{i}$ are the amplified force and applied force. We may also consider them as output and input force.          

In the given question, the force given to the steering wheel is 50 N.

The output force produced by the steering wheel is 3750 N.

Hence the mechanical advantage will be-

                               $MA=\frac{F_{o}} {F_{i}}$

                                       $=\frac{3750\ N}{50\ N}$

                                       $=75$      [ans]