ENSC 2113 Chapter 9: 9_7

Suppose a block is moving in a certain direction with constant velocity then what will be the magnitude of the force?

A uniform steel beam AB of Weight  is loaded as indicated in the Figure 1 below:

Figure 1.

It is required to determine:

1. The magnitude of the reactions and , in the absence of the external force F.

1. the magnitude of the load F acting at B that makes the reaction force at A to be zero.

1. the magnitude of when F is acting at B.

Figure 1 shows a system of two blocks A weighs 1800 N and B weighs 2200 N, are lying on inclined planes. The two blocks are connected by a uniform horizontal rod of weight 800 N. Determine (a) the reaction of each block on the plane surfaces (b) the compression force of the rod on blocks A and B (c) the value of force P to impend the block A upward. Take the coefficient of friction for all the surfaces as 0.3