An open knife edge of mass M is dropped from a height h on wooden floor. If the blade penetrates a distance s into the wood, the average resistance offered by the wood to the blade is

An open knife edge of mass M is dropped from a height h on wooden floo

1.	An open knife edge of mass M is dropped from a height h on wooden floor. If the blade penetrates a distance s into the wood, the average resistance offered by the wood to the blade is
Answer» MG `Mg(1 + h/s)` `Mg(1 -h/s)` `Mg(1+ h/s)^(2)` ANSWER :B