





COMENTÁRIO DA PROVA
- FÍSICA

 







 




 
  







  
 

 




 
  






 


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COMENTÁRIO
– ASSUNTO: MECÂNICA




   

N
   


 

psenθ



 
θ

pcosθ

 


 
FR = m . a



psenθ = m . a

mg
senθ
=
m
.
a
 




a = g senθ






Observe que a aceleração só depende do seno
 do ângulo, assim, a razão pedida é igual

a
1.





Item: A

 

 




 

 



















 

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