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geerky42
 3 years ago
i have question
geerky42
 3 years ago
i have question

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geerky42
 3 years ago
Best ResponseYou've already chosen the best response.0heres the FBD of a block acceleration at friction horizontal surface: dw:1349649866061:dw

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.0my question is how does it affect the free body diagram if i place smaller block in front of it like this: dw:1349649924401:dw assume F is so big that the smaller block does not to fall? Do it has any force against F? Please explain it to me.

Fellowroot
 3 years ago
Best ResponseYou've already chosen the best response.0How can the smaller block not fall?

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.0there is a friction between two blocks assume force applied to bigger block is so high that the friction prevents smaller block from falling. Is it possible? idk haha

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.0and the FBD of smaller block is this, right? dw:1349650685060:dw

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.0or should normal force face to the left? why?

imron07
 3 years ago
Best ResponseYou've already chosen the best response.1No, the normal force is in correct direction.

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.0what i dont understand is shouldnt second normal force from block 1 and 2 cancel each other out?

imron07
 3 years ago
Best ResponseYou've already chosen the best response.1N, it does not cancel each other. The forces act in different object.

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.0oic thank. you didnt answer this question: is it possible for force applied to bigger block to be so high that friction can prevents smaller block from falling?

imron07
 3 years ago
Best ResponseYou've already chosen the best response.1I was going to answer that. Yes, it is possible. The magnitude of normal force on smaller block actually depend on magnitude of the force acted on large block. The larger the force, the larger normal force on smaller block. If the normal force on smaller block large enough, the friction is large too (f=uN). The friction prevents block from falling.

Fellowroot
 3 years ago
Best ResponseYou've already chosen the best response.0is it possible for force applied to bigger block to be so high that friction can prevents smaller block from falling? Theoretically I'm sure its true. In real life hmmmm. Let me think. I guess if you think of the friction between them to be so great that them being together is like Velcro then sure.

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.0ok thanks, everyone, it was great helpful :)
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