Questions from Mechanics

Q: A symmetrical framework consisting of three pin-connected bars is loaded

A symmetrical framework consisting of three pin-connected bars is loaded by a force P (see figure). The angle between the inclined bars and the horizontal is 52 a 58. The axial strain in the middle ba...

Q: A specimen of a methacrylate plastic is tested in tension at room

A specimen of a methacrylate plastic is tested in tension at room temperature (see figure), producing the stress-strain data listed in the accompanying table. Plot the stress-strain curve and determin...

Q: The data shown in the accompanying table are from a tensile test

The data shown in the accompanying table are from a tensile test of high-strength steel. The test specimen has a diameter of 0.505 in. and a gage length of 2.00 in. At fracture, the elongation between...

Q: A square steel tube of a length L = 20 ft and

A square steel tube of a length L = 20 ft and width b2 = 10.0 in. is hoisted by a crane (see figure). The tube hangs from a pin of diameter d that is held by the cables at points A and B. The cross se...

Q: A circular nylon pipe supports a downward load PA = 10 kN

A circular nylon pipe supports a downward load PA = 10 kN, which is uniformly distributed around a cap plate at the top of the lower pipe. A second load PB = 20 kN is applied upward at the top. The in...

Q: A circular tube AB is fixed at one end and free at

A circular tube AB is fixed at one end and free at the other end. The tube is subjected to axial force at joint B. If the outer diameter of the tube is 3 in. and the thickness is Â&f...

Q: A force P of 70 N is applied by a rider to

A force P of 70 N is applied by a rider to the front hand brake of a bicycle (P is the resultant of an evenly distributed pressure). As the hand brake pivots at A, a tension T develops in the 460-mm l...

Q: A bicycle rider wants to compare the effectiveness of cantilever hand brakes

A bicycle rider wants to compare the effectiveness of cantilever hand brakes (see figure part a) versus V brakes (figure part b). (a) Calculate the braking force RB at the wheel rims for each of the b...

Q: A circular aluminum tube with a length of L = 420 mm

A circular aluminum tube with a length of L = 420 mm is loaded in compression by forces P (see figure). The hollow segment of length L/3 has outside and inside diameters of 60 mm and 35 mm, respective...

Q: The cross section of a concrete corner column that is loaded uniformly

The cross section of a concrete corner column that is loaded uniformly in compression is shown in the figure. A circular pipe chase cut-out of 10 in. in diameter runs the height of the column (see fig...