Question

Th e diagram shows a 3.0 m uniform beam AB, pivoted 1.0 m from the end A. Th e weight of the beam is 200 N. A B 1m 2m a Copy the diagram and mark the beam’s centre of mass. [1] b Add arrows to show the following forces: the weight of the beam; the contact force on the beam at the pivot. [2] c A third force F presses down on the beam (at end point A). What value of F is needed to balance the beam? [5] d When this force is applied, what is the value of the contact force that the pivot exerts on the beam?​

Answer 1

Answer:

Th e diagram shows a 3.0 m uniform beam AB, pivoted 1.0 m from the end A. Th e weight of the beam is 200 N. A B 1m 2m a Copy the diagram and mark the beam’s centre of mass. [1] b Add arrows to show the following forces: the weight of the beam; the contact force on the beam at the pivot. [2] c A third force F presses down on the beam (at end point A). What value of F is needed to balance the beam? [5] d When this force is applied, what is the value of the contact force that the pivot exerts on the beam?