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Online Homework System Assignment Worksheet 2/1/21 - 4:56:00 PM EST Name: ____________________________ Class: MAT1322[C] Calculus II 20211 Class #: ____________________________ Section #: ____________________________ Instructor: Maryam Basiri Assignment: Assignment 3 Question 1: (1 point) Find the arc length of the curve between and The approximate value within is ____________. .
Question 2: (2 points) A vertical dam has the form of an isosceles trapezoid with horizontal sides parallel. The dam is m high, m in its lower part and m in its upper part. Finally, the dam retains m of water, as indicated in the figure below. 25 30 50 15
a) Let denote the height in meters measured from the base of the dam. The hydrostatic force exerted by the water on the portion of the dam comprised between m and m is approximately . What is ? Note that the density of water is and the acceleration due to gravity on the earth’s surface is . Express your answer as a formula. Answer: __________ b) In Newtons, what is the total hydrostatic force exerted on the dam?

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