Physics 101 Lecture Notes - Lecture 32: Net Force
Document Summary
Torques and application: a subsection of chapter 8. For this example, you would choose answer a . You need a force to counter act both the east force and the southwest force, resulting in a force with a vertical (or north) direction. Given the aforementioned definition of a torque, we can conclude that the applied north force needs to be long in order to fully balance the net torque at zero. Find the net torque on the wheel about the axle through o (origin), taking a=10. 0cm and b=25. 0cm. = 3. 55 nm in the clockwise (cw) direction. In order to solve this problem, you must designate a counter clockwise (ccw) and clockwise (cw) direction. All ccw torques are negative, while the latter are positive. You then multiply the magnitude of each force by either a or b . You then decide whether or not the final answer is positive by looking at the final direction.
