A star sculpture was being held up by a board connected to a wall at one end, an

Question

A star sculpture was being held up by a board connected to a wall at one end, and supported by a stand on the other.  But an obnoxious 8th grader has kicked out this stand supporting the priceless piece of art.  Rushing to the rescue, what force F must you exert to hold it up?  You can take the mass of the board to be m = 5kg, its length to be ? = 3m, the mass of the star sculpture to be 15kg, and its distance from the wall to be 2m.  You can also take ? = 25

A star sculpture was being held up by a board connected to a wall at one end, and supported by a stand on the other. But an obnoxious 8th grader has kicked out this stand supporting the priceless piece of art. Rushing to the rescue, what force F must you exert to hold it up? You can take the mass of the board to be m = 5kg, its length to be ? = 3m, the mass of the star sculpture to be 15kg, and its distance from the wall to be 2m. You can also take ? = 25 degree.

Explanation / Answer

F*cos25*3 = (15*9.8*2)+(5*9.8*(5/2))

F= 153.185634 N

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