Autor: Dominando a Física | Publicado: 2012-10-30T16:52:00-02:00

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&nbsp;4)Desenhe o Carrinho e
indique as forças existentes sobre ele (Justifique a existência de cada uma
delas).








 
 
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 

 




* Peso:&nbsp;Força
com que o carrinho é atraído para o centro da Terra.



*Normal: Terceira Lei de Newton, da Ação e Reação,
é uma força contrária ao Peso.



*Tração:&nbsp;Força
presente na linha presa à ratoeira e ao eixo traseiro. A mesma permite a
rotação do eixo traseiro e, consequentemente, o movimento do carrinho.



*Atrito

&nbsp;Atrito
1:&nbsp; Bexiga envolvendo as rodas,&nbsp; para aumentar o atrito da roda com o chão.

Atrito 2: Para gerar mais atrito onde no
eixo, onde se enrola o barbante, colocamos um pedaço lixa d´água.


*Gravidade