What is the IMA of a car’s steering wheel if the wheel has a diameter of 40 cm and the shaft it’s attached to has a diameter of 4 cm?

To find the IMA (Ideal Mechanical Advantage) of a car's steering wheel, we need to compare the diameters of the wheel and the shaft it's attached to.

Step 1: Determine the radius of the wheel and the shaft. The radius of the wheel is half of its diameter, so the radius of the wheel is 40 cm / 2 = 20 cm. The radius of the shaft is half of its diameter, so the radius of the shaft is 4 cm / 2 = 2 cm.

Step 2: Calculate the IMA. The IMA is calculated by dividing the radius of the wheel by the radius of the shaft. IMA = Radius of Wheel / Radius of Shaft IMA = 20 cm / 2 cm IMA = 10

Therefore, the IMA of the car's steering wheel is 10.