#1
What forces would be acting on the nail as it is:
a) being driven into a piece of wood with a hammer
b) being pulled from a piece of wood with a crowbar

Can anyone please help? Thanks in advance.
#4
Newtons third law
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#7
a) normal force acting on the head of the nail by the hammer, weight of the nail, kinetic friction of the nail against the wood

b) normal force acting on the underside of the head of the nail from the crowbar, weight of the nail, kinetic friction of the nail against the wood
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#8
Quote by UnAwesome
What forces would be acting on the nail as it is:
a) being driven into a piece of wood with a hammer
b) being pulled from a piece of wood with a crowbar

Can anyone please help? Thanks in advance.



a) Gravity downwards, hammer's force downwards, nail's weight downwards, push upwards from wood and friction.
b) Gravity downwards, nail's weight downwards, crowbar's pull upwards, friction between nail and wood, friction between nail, and crowbar.
#9
Quote by UnAwesome
What forces would be acting on the nail as it is:
a) being driven into a piece of wood with a hammer
b) being pulled from a piece of wood with a crowbar

Can anyone please help? Thanks in advance.



A) The head of the hammer forcing the nail into the wood, and the woods resistance to the downward motion (Newton's 3rd Law).

B) The upward pull of the crowbar pulling the nail out, and the nail/wood's resistance to the upward pull.