1. The problem statement, all variables and given/known data
Find the normal force on an object, 80kg, which is being pulled up by a force of 4000N at an angle of: A) Up at 50 degrees. B) Down at an angle of 70 degrees.
2. Relevant equations
Fw = mg
3. The attempt at a solution
A) Fn = 784 - 4000sin50 = -2280 = 2280N
B) Fn = 784 + 4000sin70 = 4543N
Is this correct?