Problem 8.58 Part A in the hammer throw, an athlete spins a heavy mass in a circ

Question

Problem 8.58 Part A in the hammer throw, an athlete spins a heavy mass in a circle at the end of a cable before releasing it for distance as shown in (Figure 1). For male athletes, the hammer is a mass of 7.3 kg at the end of a 1.2 m cable, which is typically a 3.0-mm-diameter steel cable. A world-class thrower can get the hammer up to a speed of 29 m/s. If an athlete swings the mass in a horizontal circle centered on the handle he uses to hold the cable Part A What is the tension in the cable? Neglect the gravity. Express your answer to two significant figures and include the appropriate units. T = 5120N My Answers Give Up Correct Part B How much does the cable stretch? Young modulus for steel is 20 X 10^10 N/m^2. Express your answer to two significant figures and include the appropriate units. DeltaL = Value Units Submit

Explanation / Answer

Part B)

Apply Y = FLo/A(delta L)

(20 X 1010) = (5120)(1.2)/(pi)(1.5 X 10-3)2(delta L)

delta L = 4.35 X 10-3 m (That is 4.35 mm)

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---