1. The problem statement, all variables and given/known data
A small block with mass 0.0400 is moving in the xyplane. The net force on the block is described by the potential energy function (5.80 )(3.50 ).
2. Relevant equations
inverse tangent of Fy/Fx = angle of acceleration
3. The attempt at a solution
The question initially asked for the magnitude of the acceleration when it was at point x=0.25m y=0.63m which I derived from the equation of potential energy then finding the magnitude of the force, and finally dividing by the mass to give me the acceleration of 1.26.92 m/s^2
The final question is asking for the direction of the acceleration of the block when it is at the same points: x=0.25m y=0.63m.
I approached this by plugging in the magnitude of the force in the y direction (4.167) and the magnitude of the force in the x direction (2.9) into the inverse tangent.
So: θ=inversetangent (4.1674/2.9) to calculate an angle of 55.167.
It's asking for: What is the direction of the acceleration of the block when it is at the point 0.25 , 0.63 ? in degrees counterclockwise from the positive x axis. Naturally I subtracted the value for θ from 360° to get a value of 304.833°
Unfortunately, the angle is incorrect somehow. Suggestions? Thanks!
