An open Knife edge of mass m is dropped from a height h on a wooden floor. If the blade penetrates up to the depth d into the wood the average resistance offered by the wood to the knife edge is-?
Vaibhav , 11 Years ago
Grade 11
1 Answers
India VK
Last Activity: 11 Years ago
Use work-energy theorem:
Total K.E. lost = mg(h+d)
If retarding force = F then work done by this force = F.d
Now equate to find F.
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