Pulling a sled with an angled force (no friction)

Description : A sled is pulled along a horizontal surface by a pair of forces which can be angled up from the horizontal. Change the values below, then click the UPDATE CONDITIONS button - then PLAY.

  Force1 magnitude =   N   Angle up from +x axis =   degrees
  Force2 magnitude =   N   Angle2 up from -x =   degrees
  mass of sled =   kg      

Some possible investigations: (There are many possible solutions to these, depending on the values.)
A) Can you set up forces to lift the mass exactly vertically?
B) With non-zero F1 and F2, and Angle1 <> Angle2, can you create a zero net acceleration condition?

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