Answer: When we hit the nail with a hammer, the nail and unsupported block together move forward as an single system. There is no force of reaction. When the block is rested against a support, the reaction of the support holds y the block in position and the nail is driven into the block.
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Why is it possible to drive a nail into a piece of wood?
Hence when a hammer is lifted it stores potential energy in it and this energy is used in driving a nail into the wood.
Why do we feel pain in the hand when we hammer a nail into a wooden plank?
According to Newton’s third law of motion the nail exerts an equal and opposite force on the hammer (the reaction). Since the hammer is held in our hand firmly, our hand experiences the force due to the reaction, and feels hurt.
Which would drive a nail deeper into a piece of wood a heavy hammer or a light hammer?
The heavy hammer would drive the nail further than the light hammer because of Law # 2, F = ma. The heavy hammer has more mass and therefore more force against the nail than the light hammer.
Why is it easy to hammer a nail into the wood but not a bolt?
The nail can penetrate the wood because it is sharp, applying high pressure to the surface area it contacts.
Why can’t we hammer a nail by its head on the wood?
We require pointed nails so that they can produce high pressure with the applied force,so the nail can easily penetrate into the wood. Q. We hammer the broader side of a nail and not its sharp end to put it in wood.
What exerts a force on the nail and drives it into a piece of wood?
The hammer exerts a force on the nail; the hammer exerts a force on the wood.
What forms of energy are involved in hammering the nail into the wood?
The mechanical energy of a hammer gives the hammer its ability to apply a force to a nail in order to cause it to be displaced. Because the hammer has mechanical energy (in the form of kinetic energy), it is able to do work on the nail. Mechanical energy is the ability to do work.
How do you push nails into wood?
Gently tap the blunt end of the nail set with a hammer. Tap as lightly as is needed to drive the nail into the wood, increasing force only when necessary. One or two light blows of the hammer are usually sufficient.
Why is it difficult to hammer the head of a nail into a wall?
The Head of the Nail has Higher area , which makes the way for distribution of pressure onto the wall (i.e Pressure at an single point decreases) .
Why does nail becomes warm when hammered into a plank?
Solution : The potential energy of the hammer is transferred to the nail. A major part of this energy is changed into kinetic energy as the nail moves into the plank and the rest is converted into heat. It si due to this heat that the nail becomes warm.
What happened to the nail if it is hammered?
Answer and Explanation: When the hammer strikes the nail then some of the energy of the hammer is dissipated in the form of heat energy as frictional energy will come into play between the hammer and the nail. Thus, the nail gets heated up when hammer strikes the nail.
Why isn’t the girl hurt when the nail is driven into the block of wood?
Why isn’t the girl hurt when the nail is driven into the block of wood? The wooden block’s tendency to remain at rest prevents it from sudden motion downward against her head.
How do you hammer nails into wood?
Is hammer pushes a nail balanced or unbalanced?
The hammer striking the nail represents unbalanced forces. The hammer strikes the nail with a strong downward force. The downward force of the hammer is greater than the force of the wood pushing up on the nail. Thus, the nail moves into the block of wood.
Why it is easier to hammer a pointed nail into the wood than blunt nail?
But the blunt nails have larger surface area when compared to the sharp nails and hence they have very less pressure of the same force. And hence the sharp nails are easier to fix than those of the blunt nails. Thus the option (A) is correct.
How do you put nails in wood without splitting?
What happen when you hammer a piece of wood?
It takes a lot of energy to drive a nail into a solid piece of wood. The hammer drives the nail through the structure of the wood. As the nail drives through, it pushes aside the cellulose fibers of the wood, which are held strongly together by lignin. As a result, the nail is held firmly in the wood.
Why does the pointed end of the nail get into wooden plank easily?
The area of the pointed end of the nail is much smaller than that of its head. The same force produces a sufficient pressure to push the pointed end of the nail into the wodden plank.
How energy is conserved by hammering a nail?
When the hammer strikes the nail, the kinetic energy of the hammer converts into the internal energy. The nail, however, absorbs only a given part of this energy (70 %) which increases the nail temperature.
How do you hammer a nail into a wall without bending it?
Is hammering a nail an example of Newton’s third law?
Newton’s third law states that every action has an equal and opposite reaction. This can be understood with examples. If you hit a nail with a hammer, the nail goes deeper into the wood due to the action force. Consequently, the force due to the nail pushes the hammer backward.
When a hammer hits a nail What is the action force and what is the reaction force?
A hammer hits a nail, driving the nail downwards into a piece of wood. The “reaction” is the force of the nail pushing upwards on the hammer, which stops the hammer.
Is hammering a nail law of inertia?
Newtons Third Law of Motion. The hammer strikes the nail exerting a force on the nail. Newtons third law states that if a force is exerted on an object, the object exerts a force back. So the nail exerts a force back on the hammer.
How does a hammer work physics?
A hammer is a simple force amplifier that works by converting mechanical work into kinetic energy and back. In the swing that precedes each blow, the hammer head stores a certain amount of kinetic energy—equal to the length D of the swing times the force f produced by the muscles of the arm and by gravity.