Final answer:
The torque τc about axis c due to force vector f can be calculated using the formula τc = r₁Fsinθ, where r₁ is the perpendicular lever arm distance from the axis to the line of action of the force, F is the magnitude of the force, and θ is the angle between the force and the line connecting the point of application to the pivot point.
Step-by-step explanation:
The torque τc about axis c due to force vector f can be calculated using the formula τc = r₁Fsinθ, where r₁ is the perpendicular lever arm distance from the axis to the line of action of the force, F is the magnitude of the force, and θ is the angle between the force and the line connecting the point of application to the pivot point.