Answer:
IMA = Distance of Effort/ Distance of resistance
Explanation:
M.A is the force amplification of a machine.
Ideally, a screw driver has varying diameters on two ends, the shaft and the handle, however, since the question does not provide those parameters, we will assume shaft and handle have the same diameter.
DE = 4
DR = 1
Therefore, IMA =
If diameter is given, IMA is calculated by
Area of Effort/ Area of resistance i.e. AE/AR
Answer: C
Explanation: i hoped that helped!
2) C would need the least effort, because the longer the effort distance, the least the effort applied.