Can i get help with my F=ma problems?

[mrphobio]

115.73 Now is this when i plug into cos? cos(28)=115.73/x (with x=hypotinus)

 

[netgypsy]

You got it. Check your math. Good JOB

 

[mrphobio]

Sick! i can't thank you enough. I would of got none of the equations right if it weren't for this. Website crashed again (probably because of all the kids doing homework last minute) but ill get it in as soon as it is up! thanks again and good night.

 

[netgypsy]

Did you get number 2? It works like number 1 but don't forget to calculate the total mass and the total actual weight before you sum your forces.

Good luck

 

[mrphobio]

Yah i got number 2. I was able to figure it out all by myself :D. Drawing things out makes it sooooo much easier.

 

[netgypsy]

Tell me about it. I flunked my first physics courss (took it over and got an A though)

 

[mrphobio]

i did the 70kg times the 20 (because it was the maxium occupancy). and then added the answer to that to 540kg to get the total down force. I converted it to Newtons then subtracted the up force (32471) from the down force. With that, I did F=Ma and got the answer. hopefully that made sense haha

 

[e.bar.goum]

Drawing diagrams is a good rule of thumb in every physics course. I'm glad you got it all in the end.

 

[mrphobio]

Yah and it helped that you guys both walked me through the steps rather then just doing it for me

 

[netgypsy]

sounds good (sometimes two cooks make a better meal) hahaha