1. Assume that if the shear stress in steel exceeds about 4.00x10^8 N/M^2, the s

Question

1. Assume that if the shear stress in steel exceeds about 4.00x10^8 N/M^2, the steel reptures.

           A) Determine the shearing force necessary to shear a steel bolt 1.10 cm in diameter. _______N (answer)

          B) Determine the shearing force necessary to punch a 1.25-cm-diameter hole steel plate 0.700 cm thick. ______N (answer)

2. For safety in climbing, a mountaineer uses nylon rope that is 65 m long and 1.0 cm in diameter. When supporting a 84-kg climber, the rope elongates 1.8 m. FInd its Young's modulus. ______Pa (answer)

3. A small ferry boat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 3.50 cm into the river. What is the weight of the truck? _______ N (answer)

Explanation / Answer

3)

I think a loaded truck would sink it. Must be a very small truck.
1 L water = 1 kg
1 L = 1000 cc
(400 x 600 x 3.5)/1000 = 840 kg

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