A biomechanical model of the bones and biceps muscles of a person's arm supporting a mass m=2 kg is shown below. The weight of the forearm is 9 N. If the cross section of the tendon AB is 28 mm' what is the average normal stress in the tendon? ufi 290 mm 50 mm 9N 200 mm 150 mm

Question 4 of 7 > A particular human hair has a Young's modulus of 3.64 × 10° N/m² and a diameter of 148 μm. If a 217 g object is suspended by the single strand of hair that is originally 15.5 cm long, by how much AL hair will the hair stretch? If the same object were hung from an aluminum wire of the same dimensions as the hair, by how much ALAI would the aluminum stretch? If the strand of hair is modeled as a spring, what is its spring constant khair? AL hair ALAI = Khair = m N/m Question Source: Freedman College Physics 3e | Publisher: Mac

A spider of mass 6.3  10-4 kg hangs from a 70.9 cm long thread whose diameter is 2.0  10-3 mm. Young's modulus of thread is 3  109 N/m2. By how much does the thread stretch (in m)?

Determine the moment M that will produce a maximum stress of 70 MPa on the cross-section.