Example -1 : Resultant of Coplanar concurrent forces | Engineering mechanics

[@MacfordMwape-d4m]

Wonderful sir! You have explained easy and understandable

[@easyscienceprep7445]

Thanks and welcome

[@jemmuelorogo1644]

Big help, thank you

[@EstherChidinma-g4l]

Sir in that F4 can I do 90 minus 35 to find the degree on the horizontal?

[@easyscienceprep7445]

Yes, you can do that. It will give you the angle made by force with horizontal.

[@EdwardMumba-v8x]

Can u kindly clarify for me why you equated 75cos 90°= -75 and 75 sin 90° = 0

[@easyscienceprep7445]

It is 75cos(-180) = -75 and 75 sin(-180) =0. By the way I have done it differently, Since 75 is acting towards negative direction of x-axis , it has only -ve x- component, that is -75 in x-direction and no y-component that is 0 in y- direction. Please go through the video, y will understand easily.

[@ElliadzDaka-io8ec]

How do you determine the tensions and Mass

[@easyscienceprep7445]

I will make a video to determine tension and mass.

[@ElliadzDaka-io8ec]

@@easyscienceprep7445 I will really appreciate

[@Bangsamoroland18]

Can you explain why on F4 , y component is 45cos35 and x component is 45sine35???? Please

[@easyscienceprep7445]

F4 is making 35 degree angle with y- axis hence y- component is F4cos35 And F4 is making (90-35)degrees with x- axis hence its x component will be F4 cos(90-35) =F4 sin35.

[@JulileNgcamu-im7ms]

I also wanna understand that part

[@313chalumuriramesh7]

on f4 Y component should be sin and X should be cos right?

[@sureshkumar-me5sn]

Angle made by F4 with y-axis (Vertical axis) is 35 degrees hence F4y= F4 x cos35 and F4x= F4xsin35

[@easyscienceprep7445]

Angle made by F4 with y-axis (Vertical axis) is 35 degrees hence F4y= F4 x cos35 and F4x= F4xsin35

[@easyscienceprep7445]

yes