Recent content by SwiftyMorgan

That answer also worked in mastering physics.

I solved the problem I posted and found that if you take 180 - (tan^-1(Fy/Fx)) you will get the correct answer.

I don't know if it will help you but I found a problem in my physics book that has the equation U(x,y) = 5.8x^2 - 3.6y^3, mass is .04 kg, x = .3m, y = .6m. Correct Answers: F = 130 m/s^2 132 degrees counterclockwise from the +x axis

My equation is U=5.65x^2 - 3.6y^3, mass = .04kg, x = .3m, y = .52m: i took the partial derivative of U with respect to x and with respect to y. Fx = -dU/dx = -11.3x Fy = -dU/dy = -10.8y^2 using the same method that you did F = sqrt(Fx^2 + Fy^2) i got F = 4.474 F=ma so 4.474/.04...

How did you do the first part exactly? What is the magnitude of the acceleration of the block when it is at the points?