The apparent outward force on a rotating mass is known as what?

The apparent outward force on a rotating mass is known as what?

• A. Vortex flow
• B. Rotary flow
• C. Torque multiplication
• D. Centrifugal force

Answer: (D)

In rotating systems, inertia makes the mass want to move in a straight line, so to an observer rotating with it there appears to be an outward push. That apparent outward force is called centrifugal force. It’s a fictitious force used to analyze motion from a rotating frame, with the real inward force (centripetal) coming from the shaft, bearing, or housing that keeps the mass moving in a circle. The other terms describe different ideas—vortex flow is a swirling fluid motion, rotary flow is general circular flow, and torque multiplication is about changing torque through gears—not about an outward inertial effect.

In rotating systems, inertia makes the mass want to move in a straight line, so to an observer rotating with it there appears to be an outward push. That apparent outward force is called centrifugal force. It’s a fictitious force used to analyze motion from a rotating frame, with the real inward force (centripetal) coming from the shaft, bearing, or housing that keeps the mass moving in a circle. The other terms describe different ideas—vortex flow is a swirling fluid motion, rotary flow is general circular flow, and torque multiplication is about changing torque through gears—not about an outward inertial effect.