Problem 8.14 MasteringPhysics Problem 8.14 MasteringPhysics Problem 8.14 Masteri

Question

Problem 8.14 MasteringPhysics Problem 8.14 MasteringPhysics Problem 8.14 MasteringPhysics Problem 8.14 MasteringPhysics 9 of 18 Problem 8.14 Problem 8.14 Tap image to zoom Part A If a person with the arm dimensions shown pushes down hard with a 90 N force, what force must the triceps muscle provide? Ignore the mass of the arm and hand in your calculation. Express your answer to two significant figures and include the appropriate units. F = SubmitGive Up Part A If a person with the arm dimensions shown pushes down hard with a 90 N force, what force must the triceps muscle provide? Ignore the mass of the arm and hand in your calculation. Express your answer to two significant figures and include the appropriate units. F = SubmitGive Up Part A If a person with the arm dimensions shown pushes down hard with a 90 N force, what force must the triceps muscle provide? Ignore the mass of the arm and hand in your calculation. Express your answer to two significant figures and include the appropriate units. F = SubmitGive Up F = F = SubmitGive Up Continue F = 9 of 18 Problem 8.14 Hold your upper arm vertical and your lower arm horizontal with your hand palm-down on a table, as shown in Tap image to zoom If you now push down on the table, you'll feel that your triceps muscle has contracted and is trying to pivot your lower arm about the elbow joint. Part A If a person with the arm dimensions shown pushes down hard with a 90 N force, what force must the triceps muscle provide? Ignore the mass of the arm and hand in your calculation. Express your answer to two significant figures and include the appropriate units. F =

Explanation / Answer

By the sum of torques...

Fr = Fr

(90)(.3) = F(.024)

F = 1100 N

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---