Questions from Mechanics

Q: A plastic bar of diameter d = 56 mm is to be

A plastic bar of diameter d = 56 mm is to be twisted by torques T (see figure) until the angle of rotation between the ends of the bar is 4.0°. (a) If the allowable shear strain in the plastic is 0.01...

Q: A copper rod of length L = 18.0in. is

A copper rod of length L = 18.0in. is to be twisted by torques T (see figure) until the angle of rotation between the ends of the rod is 3.0°. (a) If the allowable shear strain in the coppe...

Q: A simply supported wood beam of rectangular cross section and span length

A simply supported wood beam of rectangular cross section and span length 1.2 m carries a concentrated load P at mid span in addition to its own weight (see figure). The cross section has width 140 mm...

Q: A circular steel tube of length L = 1.0m is

A circular steel tube of length L = 1.0m is loaded in torsion by torques T (see figure). (a) If the inner radius of the tube is r1 = 45 mm and the measured angle of twist between the ends is 0.5Â...

Q: Solve the preceding problem if the length L = 56 in,

Solve the preceding problem if the length L = 56 in, the inner radius r1 = 1.25 in, the angle of twist is 0.5 °, and the allowable shear strain is 0.0004 rad. Data from Problem 4: A circ...

Q: A circular aluminum tube subjected to pure torsion by torques T (

A circular aluminum tube subjected to pure torsion by torques T (see figure) has an outer radius r2 equal to 1.5 times the inner radius r1. (a) If the maximum shear strain in the tube is measured as 4...

Q: A solid steel bar of circular cross section has diameter d =

A solid steel bar of circular cross section has diameter d = 2.5 in, L = 60 in, and shear modulus of elasticity G = 11.5 × 106 psi. The bar is subjected to torques T = 300 lb-ft at the en...

Q: A stepped shaft ABC consisting of two solid circular segments is subjected

A stepped shaft ABC consisting of two solid circular segments is subjected to torques T1 and T2 acting in opposite directions, as shown in the figure. The larger segment of the shaft has a diameter of...

Q: A circular tube of outer diameter d3 = 70 mm and inner

A circular tube of outer diameter d3 = 70 mm and inner diameter d2 = 60 mm is welded at the right hand end to a fixed plate and at the left-hand end to a rigid end plate (see figure). A solid, circula...

Q: A stepped shaft ABCD consisting of solid circular segments is subjected to

A stepped shaft ABCD consisting of solid circular segments is subjected to three torques, as shown in the figure. The torques have magnitudes of 12.5 kip-in., 9.8 kip-in., and 9.2 kip-in....