The discussion focuses on calculating torque in a physics problem involving a spool. The equation for torque is defined as Torque = FR, where R represents the radius or distance from the axis of rotation to the point of force application. Participants clarify that only one torque acts on the spool due to the absence of friction and that the normal force does not contribute to torque. The conversation emphasizes the need to understand the angular equivalent of Newton's second law, which is crucial for solving the problem.
PREREQUISITESStudents studying physics, particularly those focusing on mechanics and rotational dynamics, as well as educators looking to clarify concepts related to torque and angular motion.
What is R in that equation? (Please don't just say "the distance" ... what distance does the R signify?)TBBTs said:
No, there is only one torque acting on the spool here. There is no friction, and the normal force does not exert a torque.
You don't need the angular velocity. What is the angular counterpart to Newton's 2nd Law, F=ma?