5) A kid is given the task of putting a 100 N bowling ball on a shelf 2 meters off the ground. The ball starts on the ground and must be raised up to the shelf.
e. How much Egrav does the ball have on the floor?

f. How much Egra will the ball have on the shelf?

g. How much working, or change in energy, does the boy have to do to the ball?
(Hint: Find working using "W = E,-E," and use answers from a and b above.)

Explanation:

Value of the cross-sectional area is as follows.

        A =

           = 3.45

The given data is as follows.

          Allowable stress = 14,500 psi

          Shear stress = 7100 psi

Now, we will calculate maximum load from allowable stress as follows.

                       =

                       = 50025 lb

Now, maximum load from shear stress is as follows.

                      =

                      = 48990 lb

Hence, will be calculated as follows.

                  = 48990 lb

Thus, we can conclude that the maximum permissible load is 48990 lb.