Blog

Load P = 11.8 lb is produced at the nylon tip of a Regal Tip Quantum 1000 drumstick as a percussionist strikes a drumhead. The hickory shaft has a diameter of 0.55 in. and a length of L = 11.1 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 tee beam has cross-sectional dimensions a = 1.9 mm, b = 7.8 mm, c = 2.2 mm, and d = 3.2 mm. Determine the vertical distance from the bottom of the beam to the centroid.

A polymer tee beam of length L = 70 mm supports a load of P = 4.3 N at its center and has a web thickness of b = 2.1 mm. The vertical distance from the bottom of the beam to the centroid is c = 5.2858 mm. The moment of inertia around a horizontal axis located at the centroid is 194.76 mm4. Determine the horizontal shear stress at H, which is located a = 3.5 mm above the bottom of the beam.

A polymer tee beam of length L = 79 mm supports a load of P = 4.3 N at its center and has a web thickness of b = 2.2 mm. The vertical distance from the bottom of the beam to the centroid is c = 4.8544 mm. The moment of inertia around a horizontal axis located at the centroid is 157.43 mm4. Determine the horizontal shear stress at H, which is located a = 2.9 mm above the bottom of the beam.

Load P = 11.8 lb is produced at the tip of a Regal Tip Elite 7B drumstick as a percussionist strikes a drumhead. The hickory shaft has a diameter of 0.61 in. and a length of L = 11.8 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.

Two cylindrical beams each support a shear force of 15.0 N. The outside diameter of the hollow beam is 58 mm, and its wall thickness is 3 mm. Determine the diameter of the solid beam that would create the same maximum horizontal shear stress in both beams.

Load P = 19.3 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 0.56 in. and a length of L = 10.9 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.

Load P = 20.3 lb is produced at the nylon tip of a Regal Tip Quantum 1000 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.

A polymer beam of length L = 79 mm supports a load of P = 2.1 N at its center. The beam has cross-sectional dimensions b = 2.3 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.

Two bars have the same width. Which one has a larger moment of inertia around its horizontal centroidal axis?