Are these two forces same?

  • Thread starter jangheej
  • Start date
19
0
Hi =)
I have a question about tape peeling.
An adhesive tape is sticked onto a surface.
1) You pull the tape off the surface
2) You drag the surface so that the tape is peeled off.
(see the attachment)

Will these two forces be the same???
so... if I want to measure the force necessary to remove a piece of adhesive tape,
then can I just measure the force necessary to pull the surface?
 

Attachments

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4
No. They would be if you were pulling in exactly the opposite direction, however.
 

sophiecentaur

Science Advisor
Gold Member
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Take this to the limit. Imagine pulling directly upwards on the tape and compare this with pulling the surface horizontally. The two situations would clearly be different. The direction is clearly very relevant.
 
Last edited:

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