The leg bone (femur) breaks under a compressive force of about 8.20 × 104 N for a human and 11.7 × 104 N for a horse. The human femur has a compressive strength of 160 MPa, whereas the horse femur has a compressive strength of 140 MPa. What is the effective cross-sectional area of the femur in a human? (Note: Since the center of the femur contains bone marrow, which has essentially no compressive strength, the effective cross-sectional area is about 80% of the total cross-sectional area.)

A 1.8 x 10-3-kg house spider is hanging vertically by a thread that has a Young's modulus of 4.0 x 109 N/m2 and a radius of 20 x 10-6 m. Suppose that a 96-kg person is hanging vertically on an aluminum (Young's modulus 6.9 x 1010 N/m2) wire. What is the radius of the wire that would exhibit the same strain as the spider's thread, when the thread is stressed by the full weight of the spider?

A cube with 2.0 cm sides is made of material with a bulk modulus of 4.7 x 10³ N/m². When it is subjected to a pressure of 2 x 105 Pa, find the change in its volume?

Many caterpillars construct cocoons from silk, one of the strongest naturally occurring materials known. Each thread is typically 2.0 um in diameter, and the silk has a Young's modulus of 4.0 x 10° N/m². Assuming that there is no appreciable space between the parallel strands, how many strands N would be needed to N = strands make a rope 8.6 m long that would stretch only 1.06 cm when supporting a pair of 81-kg mountain climbers? Again assuming that there is no appreciable space between the parallel strands, what would be the diameter d of the rope? d = cm Question Source: Freedman College Physics 3e | Publisher: Mac 5:04 PM 69°E Partly sunny

Two strips of metal are riveted together at their ends by four rivets, each of diameter 6.0 mm. What is the maximum tension that can be exerted by the riveted strip if the shearing stress on the rivet is not to exceed 6.9 × 107Pa? Assume that each rivet is to carry one-quarter of the load.

Scenario #3: Sepak Takraw, known as kick volleyball, is a traditional sport played in Southeast Asia. Players use their feet, knees, and chest to hit a ball over a net, and they score points if their opponents do not return the ball. The balls are traditionally woven from palm vines, and they have a radius of 8 cm, a cross sectional area of 0.02 m², and mass of 0.18 kg. For this problem, assume the ball is kicked with a speed of 22 m/s. Multiple Choice Questions 5) What is the drag force on the 22 m/s ball? Assume they are at sea level and the drag coefficient is 0.35. a) I N b) 2 N c) 3 N d) 4 N 6) If the ball starts from rest and the player kicks it to a speed of 22 m/s, what is the average force of the kick? Assume their foot is in contact with the ball for 20 ms (2 x 10-2 s). a) 100 N b) 200 N e) 5 N 1) 6 N c) 300 N d) 400 N 500 N e) f) 600 N Short Answer Question Sepak Takraw players are remarkably athletic and can jump to impressive heights in order to kick the ball. Suppose a…

A 2.50m long steel piano wire has a diameter of 0.50cm. How great is the tension in the wire if it stretches by 0.45cm when tightened, taking the Young's Modulus to be 2.0×10^11N/m^2

A steel wire of diameter 1 mm can support a tension of0.2 kN. A cable to support a tension of 20 kN should have a diameter of what order of magnitude (in cm)? O 1.0 O 2.0 O 0.4 O 2.5 O 0.25

A steel wire of length 1.97 m with circular cross section must stretch no more than 0.240 cm when a tensile (stretching) force of 420 N is applied to each end of the wire. What minimum diameter (dmin) is required for the wire? Express your answer in millimeters. Take Young's modulus for steel to be Y = 2.00×1011 Pa .

A solid copper cube has an edge length of 80.8 cm. How much stress must be applied to the cube to reduce the edge length to 80 cm? The bulk modulus of copper is 1.4 x 10¹¹ N/m². Number i ! Units N/m^2 or Pa