Which of the following laws support the fact that it is difficult to fix a nail on a freely suspended wooden frame?

Correct option is C

The correct answer is (c) Newton's third law of motion

Explanation:
• According to Newton's third law, for every action, there is an equal and opposite reaction.
• To fix a nail, the hammer exerts a force (action) on the nail, and the nail exerts a reaction force back.
• If the frame is freely suspended, it moves away when hit, failing to provide the necessary reaction force to push the nail into the wood.

Information Booster:
• This is why a solid support or 'backing' is needed when hammering.
• Momentum is also conservation-related here, but the specific 'difficulty' arises from the lack of reaction.

Additional Knowledge:
Pascal's law (Option a)
• Deals with pressure transmission in fluids.
Newton's second law (Option b)
• F = ma; relates force to acceleration.
Newton's Law of inertia (Option d)
• Relates to an object's tendency to resist changes in its state of motion.

So the correct answer is (c)