Question on working out forces acting on a brick.

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The discussion focuses on calculating the forces acting on a brick, specifically addressing the net force as ƩF=f1-f2, resulting in 22.19N acting downward. The participant expresses confidence in their calculations but seeks validation from others. Concerns about friction are raised, particularly regarding its impact when the brick is pulled. However, it is clarified that friction is not relevant to the specific question being addressed. The conversation emphasizes the importance of understanding the forces involved in physics problems.
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http://imgur.com/MyxXW

Attempt at solution for the last question:
ƩF=f1-f2
Ʃf=25-2.81=22.19N
The force is acting downwards, towards the center of the earth.

Could you lovely people check this over and check if I have it right? Because I have a bad feeling about it.
 
Last edited:
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As far as I can see, it looks right to me.
 
Woohoo! I'm not going to fail A-level physics! Thanks man.
 
What about the friction? Imagine they put the brick on your arm. You would feel a downward force as you have calculated, yes. But if they started pulling the brick, would you feel your arm being pulled too, assuming that there was significant friction?
 
Friction has nothing to do with what the last question is asking.
 
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