H.W: (a) Calculate the moment of the 90-N force about point O for the condition 0= 15°. Also, determine the value of 0 for which the moment about O is (b) zero and (c) a maximum. F=90 N 800 mm 600 mm

+50 mm- 75 mm -J B 25 mm 30° X D M How can I take the moment to the point A when showing the total moment.

Calculate the combined moment of the couple C and the force P about the axis AB. Use C = 80 N · m and P = 400 N. "Full procedure (step by step), please."

n this question, you will calculate the second moment of area for a 4 ✕ 6 piece of lumber about the x − x and y − y axes, as shown. A rectangle with height h and width w > h is centered on the origin of the x y-coordinate plane. The left and right sides of the rectangle, having height h, are parallel to the vertical y – y axis and the top and bottom sides, having width w, are parallel to the horizontal x – x axis. Visit a hardware store and measure the actual dimensions of a typical 4 ✕ 6 piece of lumber. (Enter your answers in inches.) h = in w = in Calculate the second moment of area about the x − x and y − y axes using the measured dimensions. (Enter your answers in in.4.) Ix – x = ______in4 Iy – y = ________in4

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