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April 20, 2014

Homework Help: physics

Posted by Sandhya on Monday, March 15, 2010 at 10:50am.

1.An elastic cord is 5.0m long and 1.0cm in diameter and acts as a spring with spring constant 70 N/m, what is the young's modulus for this material?

2.A heavy uniform beam of mass 8000 kg and length 2.0m is suspended at one end by a nylon rope of diameter 2.5 cm and at the other end by a steel rope of diameter .64cm. The ropes are tied together above the beam. The unstretched lengths of the rope are 3.0 m each. What angle will the beam make with horizontal.

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