A sign has a mass of 1050 kg, a height h = 1 m, and a width w = 4 m. it is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23 to the horizontal holds the sign to the wall. Note that the distance from the left edge of the sign to the wall is 1 m. Suppose we rely upon friction between the wall and the rod to hold up the sign (there is no hinge attaching the rod to the wall). If the sign had less mass, the coefficient of friction of the wall, to be able to still hold the sign, would (cid:374)eed to (cid:271)e . Once at the merry-go-round the person jumps on and holds on to the rim of the merry-go-round. Once the person gets half way around, they decide to simply let go of the merry-go-around to exit the ride.