*)A 4 ft long horizontal bar supports a load of 60 lb at one of its ends. The other end is pinned to a wall. The bar is also supported by a string connected to the load-end of the bar and tied to the wall. Find the force in the support reactions and the force in the string. (Input the Force in the string here: B C 3' 4' - 60 lb

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!