Sunday

April 20, 2014

April 20, 2014

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

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.

- physics -
**drwls**, Monday, March 15, 2010 at 11:32amPlease present one question per post and show your work.

1. The amount of stretch is

(delta L) = F*L/(A E)

= 4 F L /( E pi D^2)

E is Young's modulaus

F is the tension force

L is the length

A is the cross ectional area

The spring constant is

k = F /(delta L)

= E pi D^2/(4L)

**Related Questions**

physics - A wire of diameter 0.65mm and length 6.0m stretches 10mm when 5.5kg is...

physic - Bungee Jumping. A bungee jumper jumps from a tall bridge attached to a ...

Physics - A rod with cross-sectional area A and length L is made from a material...

Physics Classical Mechanics - A bungee jumper jumps (with no initial speed) from...

physics - a spring with spring constant k= 100N/m is at its equilibrium length a...

physics - Sir Robert Hooke (1635-1703), studied the elastic properties of ...

physics - An elastic cord is 69 cm long when a weight of 57 N hangs from it but ...

Physics - A spring with spring constant k=100 (N/m) is at its equilibrium length...

Physics - A spring has a spring constant of 25N/m . Part A How much work is ...

physics - A spring has a spring constant of 25N/m . Part A How much work is ...