Imat 2016 question 58

[Amjad]

The diagram shows a uniform horizontal beam of negligible mass, 5.0 m long, placed on two supports, one at each end. It has a 300 N weight placed 1.0 m from one end and a 500 N weight placed 1.0 m from the other end. Both weights act vertically on the beam as shown in the diagram.

What are the upward forces from the two supports acting on the beam?

A. 340 N and 460 N
B. 300 N and 500 N
C. 240 N and 560 N
D. 400 N and 400 N
E. 360 N and 540 N

[Ibraheem_Saeed]

First consider on side as pivot and calculate the opposite force. After that consider other as pivot and calculate other force. For calculation pay attention to moment arm.