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

1.	An open knife edge of mass M is dropped from a height .h. on a 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