Consider the figure above, where a rigid beam of negligible mass and 10 m long is supported by a cable attached to a spring. When NO block is hung from the beam, the length L (cable-spring) is equal to 5 m. Assume that immediately after block (weight of 260 N) is hung at the end of the beam the spring does not stretch, calculate the tension under this assumption. Using this tension find how much the spring stretches. Express the amount the spring is stretched in cm. k =8400 N/m.

Question

Consider the figure above, where a rigid beam of negligible mass and 10 m long is supported by a cable attached to a spring.  When NO block is hung from the beam, the length L (cable-spring) is equal to 5 m.  Assume that immediately after block (weight of 260 N) is hung at the end of the beam the spring  does not stretch, calculate the tension under this assumption.  Using this tension find how much the spring stretches.  Express the amount the spring is stretched in cm.  k =8400 N/m.