Free Body Diagram Question

label Physics
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An 80 N force is applied at an angle of 30 degrees on a 100 N object.  The force of friction is 40 N.  What is the net acceleration of the object?

Oct 26th, 2014

diagram.png

the force marked ? is adjacent to 30 degrees, 80N is the hypotenuse, so 80 cos30 is the relevant amount of force. In the exact opposite direction, friction is 40N, so the net force on the object is (80cos30)-40 N. Given that F=ma, you have F and m, solve for a.

(Did you get 0.293?)

Oct 26th, 2014

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Oct 26th, 2014
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Oct 26th, 2014
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