7.1 Example 1

Calculate the resultant of the three following forces:

Solution with FisicaLab

Select the Static group and, inside this, the Particles module. Erase the content of the chalkboard and select the SI system. And add one element Point. Now, add two elements Oblique force, one element Horizontal force and one element Resultant. As show the image below:

To the element Point we have:

Name

Point

Remember that this name is irrelevant. To the element Horizontal force write:

f

50

To the element Oblique force that pointing upwards, that correspond to the force of 75 Newtons at 50 degrees, write:

f

75

ang

50

To the element Oblique force that pointing downwards, that correspond to the force of 35 Newtons at 35 degrees, write:

f

35

ang

35

And to the element Resultant, write:

f

r

ang

ang

Now click in the icon Solve to get the answer.

r = 132.271 N ;  ang = 16.415 degrees ;
Status = success.