QUESTION 5 10 points Save Answer Solve the problem. How much work is done by a 1

Question

QUESTION 5 10 points Save Answer Solve the problem. How much work is done by a 120-lb woman as she walks up 12 steps, each with a 5-ft rise? O2880 ft.Ib O360 ft lb 720 ft lb O 1440 t.lb QUESTION 6 10 points Save Answer Solve the problem. An isosceles triangular plate is submerged vertically in seawater, with its base on the bottom. The base is 12ft long, and the height of the triangle is 12ft. Find the force exerted on one face of the plate if the water level is 2 ft above the base of the triangle. Seawater weighs 64 lbjft3. Round your answer to one decimal place if necessary 4352 lb 0 426.7 lb O1450.7 lb 2176 lb

Explanation / Answer

5) Work done = Weight* Height

Given weight =120 lb

Distance walked up = 12 * 1/2 =6 ft

Work done = 120 lb * 6 ft

= 720 ft -lb

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