Find Acceleration of Sled Pulled by Chuck with 50kg Mass

[Bdurb]

Chuck pulls his brother in a sled. Chucks brother and the sled have a combined mass of 50kg. On a flat surface, chuck pulls with 120 N 30 degrees above the horizontal. The coefficient of friction btwn the sled and the snow is .08. Find the acceleration of the sled.
i drew my FBD

but I am not sure if assumed wrong for the Fn or the normal force. Any help is greatly appreciated.

 

[thrill3rnit3]

Normal forces always acts perpendicular to the surface.

And that 500 should be a 50, based from your question.

 

[Redbelly98]

Chuck pulls his brother in a sled. Chucks brother and the sled have a combined mass of 50kg. On a flat surface, chuck pulls with 120 N 30 degrees above the horizontal. The coefficient of friction btwn the sled and the snow is .08. Find the acceleration of the sled.

i drew my FBD
http://i746.photobucket.com/albums/xx109/SubyFTW/DSC01211.jpg

but I am not sure if assumed wrong for the Fn or the normal force. Any help is greatly appreciated.

Your Fn is incorrect. Fn must act straight upward, perpendicular to the surface as thrill3rnit3 said.

Set up two equations using F_net=ma. One equation for the y-direction, and one for the x-direction.

Normal forces always acts perpendicular to the surface.

And that 500 should be a 50, based from your question.

No, the 500 is correct since he is indicating forces in Newtons.

Using g=10 m/s² gives a weight of 500 N for the 50 kg mass.

 

[thrill3rnit3]

Oops, brain fart that time