Help with drawing a free body diagram

[Nguyenfa.t]

Homework Statement

http://www2.snapfish.com/slideshow/AlbumID=795802024/PictureID=21345511024/a=938016024_938016024

http://www2.snapfish.com/slideshow/AlbumID=795802024/PictureID=21338820024/a=938016024_938016024

or you can download the attachment.

Any help would be greatly appreciated. Thanks in advance guys.

Homework Equations

The Attempt at a Solution

 

[negitron]

You need to make more of an effort than that if you expect us to help you. What do you think is the proper equation and how might you go about solving it? What, exactly, are you stuck on?

 

[rock.freak667]

Start by drawing a free body diagram.

 

[Nguyenfa.t]

im working on the problems right now but i don't even know what forumulas to use. my physics teacher is terrible and I am taking it during the summer so it goes by real quick. I am completely lost in the course. However, he said the midterm is going to be like the practice one with just different numbers. if you could help at all it would be great

 

[rock.freak667]

im working on the problems right now but i don't even know what forumulas to use. my physics teacher is terrible and I am taking it during the summer so it goes by real quick. I am completely lost in the course. However, he said the midterm is going to be like the practice one with just different numbers. if you could help at all it would be great

F=ma is all you need for these questions. Post your free body diagram and then we can help you further.

 

[Nguyenfa.t]

http://www2.snapfish.com/slideshow/AlbumID=796041024/PictureID=21357404024/a=938016024_938016024

i don't know what else to do with the free diagrams

 

[rock.freak667]

http://www2.snapfish.com/slideshow/AlbumID=796041024/PictureID=21357404024/a=938016024_938016024

i don't know what else to do with the free diagrams

The 10kg block's weight acts vertically downwards. This weight can be split into two components, one perpendicular to the incline and one parallel to the incline. Can you split the weights into these two components?

 

[Nguyenfa.t]

what do you mean? are the other diagrams correct?

 

[Nguyenfa.t]

what do i do after the diagrams?

 

[rock.freak667]

what do you mean? are the other diagrams correct?

For the question with the plane and the two tensions your FBD should look like http://en.wikipedia.org/wiki/Inclin...ces_acting_on_an_object_on_an_inclined_plane".

For the block hanging off the edge, one tension acts upwards while the other tension and the weight acts downwards. (This means that the 10kg block moves down the plane)

 

[Nguyenfa.t]

oh okay awesome thanks for everything!