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AP® Physics C: Mechanics

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Free-Body Diagram: Tilted Coordinate Systems on an Inclined Plane

APPHMC-EEBEYM

A box of mass $m$ is placed on a ramp inclined at an angle of $\theta$. The coordinate system is defined with the +$x$-axis pointing down the ramp, and the +$y$-axis pointing perpendicular to the ramp as shown in the figure below.

Nick Borowicz. Created for Albert.io, copyright 2016. All rights reserved.

Which of the following choices shows the correct vector for the weight of the box, with its $x$ and $y$ components?

A

Nick Borowicz. Created for Albert.io, copyright 2016. All rights reserved.

B

Nick Borowicz. Created for Albert.io, copyright 2016. All rights reserved.

C

Nick Borowicz. Created for Albert.io, copyright 2016. All rights reserved.

D

Nick Borowicz. Created for Albert.io, copyright 2016. All rights reserved.

E

Nick Borowicz. Created for Albert.io, copyright 2016. All rights reserved.