Moments and force -- Forces on a cantilever hole punch

In summary, the conversation discusses the calculation of the total force exerted by a single pin on paper when using a perforator to create two holes. The solution involves multiplying the force of 40 N by the distance of 5 cm plus 1.1 cm and then dividing by 2, giving the answer as approximately 24.5 N. The conversation also highlights the importance of understanding and applying the given equations in order to arrive at the correct solution.
  • #1
radaway
9
1

Homework Statement


sam makes a punch hole with the perforater( two holes ). She presses the lever at A down with a force of 40 N. Calculate the total force which a single pin presses on the paper.

Homework Equations


http://s6.postimg.org/yx62wbild/image.png

The Attempt at a Solution


would it be :
40 N X 5 cm = 1,1cm X 'x' ?
 
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  • #2
What about the two in the number of holes ?
 
  • #3
<What about the two in the number of holes>
umm.. the perforater did what it normally needs to do. punch in 2 holes at the same time.
did you mean , I multiply the r.h.s of the equation with '2' ?
 
  • #4
radaway said:
Calculate the total force which a single pin presses on the paper.
is what is asked for ...
 
  • #5
Post edited to remove insult
How about --

40*(5+1.1)=(2f)*1.1 , thus f=... N.
 
Last edited by a moderator:
  • #6
What's important is that you've got it ! (almost) all by yourself !
 

What is a moment?

A moment is a measure of the turning effect of a force on an object. It is calculated by multiplying the magnitude of the force by the perpendicular distance from the pivot point to the line of action of the force.

What is a force?

A force is a push or pull that can cause an object to accelerate or deform. It is described by its magnitude, direction, and point of application.

How does a cantilever hole punch work?

A cantilever hole punch uses a lever mechanism to apply a force to punch a hole in a material. The force is applied at the end of the cantilever arm, which acts as a lever, and the hole punch serves as the pivot point.

What factors affect the force required to punch a hole with a cantilever hole punch?

The force required to punch a hole with a cantilever hole punch is affected by the thickness and hardness of the material being punched, the size and shape of the hole punch, and the length and stiffness of the cantilever arm.

How does the concept of moments and forces apply to a cantilever hole punch?

The concept of moments and forces applies to a cantilever hole punch because the force applied at the end of the cantilever arm creates a moment, which is then used to overcome the resistance of the material being punched.

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