Calculating Work (3 Examples) | Calculate the work done by the force ...

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Work is defined as the force, in the direction of a displacement, times that displacement.

W=F⋅s … with units of Joules (J).

In more complicated examples involving direction, work is defined as the dot product of the force vector times the displacement vector.

Q1. Calculate the work performed by a constant force of 60 N acting in the direction of a displacement of 3.0 m.

Q2. Calculate the work performed by a constant force of 40 N pushing a block a distance of 3.0 m along a horizontal surface at an angle of 20° with the horizontal as shown below.

Q3. Calculate the work done by the force of gravity acting on a 70 kg student sliding down a 30° inclined slide with a slant distance of 10 m.
  1. Study Force
  2. Calculating Work
  3. Calculate the work performed
  4. Calculate the work done by the force of gravity
  5. Dot Product
  6. Work Formula in Physics
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Комментарии
Автор

How to find the distance when given force, work, and direction?

jamesmichaeldavis
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Hi,

Newly subscribed here.

Just want to know how to decide whether degree or radian is to be used for angles.
I have seen same examples with different answers. Some used radians and some used degrees. May I know which is which and the reason for the preference over the other? i
Thanks!

MrSerendipity
Автор

The way that you calculated the hypotenuse isn’t right i think. You could have just done 680/sine of 60.

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