A polymer tee beam has cross-sectional dimensions a = 2.1 mm, b = 7.6 mm, c = 2.5 mm, and d = 3.4 mm. Determine the vertical distance from the bottom of the beam to the centroid.

A polymer beam of length L = 74 mm supports a load of P = 3.1 N at its center. The beam has cross-sectional dimensions b = 2.0 mm and h = 8.8 mm. Determine the magnitude of the horizontal shear stress at H, which is located a = 1.8 mm from the top.

A polymer beam of length L = 75 mm supports a load of P = 5.0 N at its center. The beam has cross-sectional dimensions b = 2.7 mm and h = 7.8 mm. Determine the magnitude of the horizontal shear stress at H, which is located a = 1.6 mm from the top.

Load P = 3.1 lb is produced at the nylon tip of a Vic Firth American Classic Jazz 8D drumstick as a percussionist strikes a drumhead. The hickory shaft has a diameter of 0.53 in. and a length of L = 10.8 in. from the center of the tip to the percussionist’s hand. Assuming the percussionist’s hand acts like a fixed support and that the shaft has a constant diameter, determine the magnitude of the maximum horizontal shear stress in the shaft.

A polymer beam of length L = 70 mm supports a load of P = 3.0 N at its center. The beam has cross-sectional dimensions b = 3.0 mm and h = 8.4 mm. Determine the magnitude of the horizontal shear stress at H, which is located a = 1.7 mm from the top.

Load P = 10.6 lb is produced at the nylon tip of a Vic Firth American Classic Jazz 8D drumstick as a percussionist strikes a drumhead. The hickory shaft has a diameter of 0.52 in. and a length of L = 10.3 in. from the center of the tip to the percussionist’s hand. Assuming the percussionist’s hand acts like a fixed support and that the shaft has a constant diameter, determine the magnitude of the maximum horizontal shear stress in the shaft.

A polymer beam of length L = 74 mm supports a load of P = 3.8 N at its center. The beam has cross-sectional dimensions b = 2.4 mm and h = 8.3 mm. Determine the magnitude of the maximum horizontal shear stress.

Load P = 6.9 lb is produced at the nylon tip of a Vic Firth American Classic Jazz 8D drumstick as a percussionist strikes a drumhead. The hickory shaft has a diameter of 0.54 in. and a length of L = 10.0 in. from the center of the tip to the percussionist’s hand. Assuming the percussionist’s hand acts like a fixed support and that the shaft has a constant diameter, determine the magnitude of the maximum horizontal shear stress in the shaft.

Mental break time. This is your last question. You deserve an easy bonus question, worth 2 bonus points. Rick Astley’s never gonna:

Which of the following defines the plus and minus ends of a microtubule?