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A steel strip of length, L = 200 mm is fixed at end A and rests at B on a vertical spring of stiffness, k = 2 N/mm. The steel strip is 5 mm wide and 10 mm thick. A vertical load, P = 50 N is applied at B, as shown in the figure. Considering E = 200 GPa, the force (in N) developed in the spring is____________
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- 3
- 12
- 6
- 9
Correct Option: A
| K = | δ |
| K = | δ |
| ⇒ δ = | K |
For cantilever,
| δ = | = | |||
| 3EI | k |
⇒ R = 3N
