Answer :
Final answer:
The couple moment produced by applying a couple forces of 75N to the wheel cannot be determined without additional information, specifically the distance between the forces. The provided information is not adequate to select the correct answer from the given options (a. 75 Nm, b. 150 Nm, c. 225 Nm, d. 300 Nm).
Explanation:
To determine the couple moment produced when the man applies a couple forces of 75N to the wheel, we must consider the distance between the forces and the angle at which the forces are applied. Since the couple forces are equal and opposite and applied perpendicular to the moment arm, the couple moment (torque) can be calculated as the product of one of the forces and the perpendicular distance (which is effectively the diameter of the wheel in this case) between the forces. However, the question does not provide the distance between the forces, thus we cannot calculate the couple moment without additional information. The provided information is not adequate to select the correct answer from the given options (a. 75 Nm, b. 150 Nm, c. 225 Nm, d. 300 Nm).
