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?

What is the primary role of the signal recognition particle (SRP) during protein synthesis?

What major modification occurs to proteins as they pass through the Golgi apparatus?

What directly triggers skeletal muscle contraction?

Which motor protein moves cargo toward the microtubule minus end?