How to Calculate the Force Exerted by a Man on a Knife Against a Stone?

What is the force with which the man presses the knife against the stone?

If the stone loses 10% of its speed in 10 seconds of grinding, what is the force with which the man presses the knife against the stone?

Answer:

'The force exerted by the man on the knife is not determined by the information given' is the correct choice. So, option 1 is true.

Given that the stone loses 10% of its speed in 10 seconds of grinding, we cannot directly determine the force with which the man presses the knife against the stone based on this information alone.

In order to calculate the force exerted by the man on the knife, we would need additional details such as the weight of the stone, the angle at which the man presses the knife against the stone, and other variables that could affect the force applied.

Therefore, the force exerted by the man on the knife cannot be accurately determined with the information given about the stone losing 10% of its speed in 10 seconds of grinding.