One side of a shelf is supported by a bracket mounted on a verticalwall by a sin

Question

One side of a shelf is supported by a bracket mounted on a verticalwall by a single screw as shown in the figure below. Ignore theweight of the bracket. (a) Find the horizontal component of the force that the screwexerts on the bracket when an W = 70.0 N vertical force is applied as shown. 1 Answer: N (b) As your grandfather waters his geraniums, the 70.0 N load is increasing at the rate 0.180 N/s. At what rate is the force exerted by thescrew changing? Suggestions: Imagine that the bracket islightly loose. You could do parts (a) and (b) most efficiently ifyou call the load force W and solve symbolically for thescrew force F. 2 N/s I would like to know how to set it up to find the the components ofthe force applied.

Explanation / Answer

    considering the torques about the point at thebottom of the bracket yeilds     (0.050 m) (70.0 N) - F (0.060 m) = 0     F = ......... N

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