Forces & Magnitude help?

  • #1
A block of mass 2.50 kg is pushed 2.18 m along a frictionless horizontal table by a constant 17.0 N force directed 22.6o below the horizontal.

Determine the magnitude of the normal force exerted by the table.
and
Determine the net force on the block.

I already found that the work done by the applied force is 3.42×101 J and the magnitude of the force of gravity is 24.50 N. I just don't know what to do to find the other two, I have tried several different equations but none of them are seeming to work for me.....
 

Answers and Replies

  • #2
116
0
Have you set up a FBD? If you do, you'll see that there's three forces that at least partly act in the y-direction. There's no movement in the y-direction, which tells you what about the forces?
 
  • #3
LowlyPion
Homework Helper
3,097
5
You need to resolve the Force applied into normal and parallel to the surface components.

That's where the 22.6° angle comes in.
 

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