Replace the loading by a force and couple moment acting at point O

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Replace the loading by an equivalent force and
couple moment acting at point O.

Replace the loading by a single resultant force, and
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Hi. I am confused about why you do not have reaction forces at the support where 15kN is being applied.

MrPJBarney
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I've learned moments to have a positive direction in the opposite way. Is there any specific advantage or difference it makes in having different moment directions?

jackcorcoran
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im confused about where the 1/3 came from

atbz
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Dax,

If your steel beam weighed 1.5kN. How and where does this force factor into the single resultant force?

joedavis