A small block with mass 0.0400 kg is moving in the *xy*-plane. The net force on the block is described by the potential- energy function U(x,y)= (5.80 J/m^{2} )x^{2}-(3.70 J/m^{3} )y^{3}.

*
What is the magnitude of the acceleration of the block when it is at the point x=
0.31 m , y=
0.61 m ?*

*What is the direction of the acceleration of the block when it is at the point x=
0.31 m , y=
0.61 m ?*

*Frequently Asked Questions*

*What scientific concept do you need to know in order to solve this problem?*

*Our tutors have indicated that to solve this problem you will need to apply the Force & Potential Energy concept. You can view video lessons to learn Force & Potential Energy. Or if you need more Force & Potential Energy practice, you can also practice Force & Potential Energy practice problems.*