Angle between Displacement and Force: 87.9 Degrees | Work and Energy Calculation

x3lifelove · May 17, 2011

A force of 640 N does 12 500 J of work over a displacement of 24.0m. What is the angle between the displacement and force? I get a answer of 87.9 degrees.

ehild · May 17, 2011

x3lifelove said:

I get a answer of 87.9 degrees.

How did you get that angle?

ehild

x3lifelove · May 17, 2011

ehild said:

How did you get that angle?

ehild

I used
cos=(24.0m)/(640N)
=87.9 degrees

I feel as though i should be taking into account the work that done, but I'm not exactly sure how to.

jhae2.718 · May 17, 2011

What is the equation that relates work, force, and displacement? Use it to solve for the angle.

x3lifelove · May 17, 2011

jhae2.718 said:

What is the equation that relates work, force, and displacement? Use it to solve for the angle.

I used the formula.
W=(Force)(displacement)
12500J= cos(x)(640N)(24.0m)
x= 35.5 degrees

jhae2.718 · May 17, 2011

That looks right.

Angle between Displacement and Force: 87.9 Degrees | Work and Energy Calculation

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Angle between Displacement and Force: 87.9 Degrees | Work and Energy Calculation

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