The  figure  shows  a  100.kg  box  suspended from the extreme  side of the  horizontal   truss. (figure in the picture attached)  Assume  that  the  truss’s weight  is  negligible;  what  is  the  tension  (N)  in  the  cord  supporting  the  truss.  Angle  is 38 degrees from  the  horizontal side  of  the  truss

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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!