Chapter 4, Problem 3RAT

A karate chop delivers a force of $3000\text{N}$ to a board that breaks. The force that acts on the hand during this event is

(a) less than $3000\text{N}$.

(b) $3000\text{N}$.

(c) more than $3000\text{N}$.

(d) Not enough information to say.

To determine

The correct option for the statement "A karate chop delivers a force of $3000\text{N}$ to a bard that breaks. The force that acts on the hand during this event is".

Answer to Problem 3RAT

The correct option for the statement "A karate chop delivers a force of $3000\text{N}$ to a bard that breaks. The force that acts on the hand during this event is" is option (b).

Explanation of Solution

Newton's third law states that when an object exerts a force on another body, another body also exerts same amount of force on the first body in opposite. For example, when a person applies a force on a body, the same force will be reacted by the body. The magnitude of that reacted force on a person is the same as the force that the person applied to the body but in the opposite direction.

As a karate chop exerts a force of $3000\text{N}$ on the board, the board will exert a force of the same magnitude $3000\text{N}$ over the karate chop or the karate chop holder's hand. The karate chop applies action force and reaction force by board in opposite direction.

Conclusion:

Therefore, the correct option for the statement "A karate chop delivers a force of $3000\text{N}$ to a bard that breaks. The force that acts on the hand during this event is" is option (b).