Which is greater: a force of 10n or a force of 5 lbs?

Well of course firstly we  want to turn that 5lbs into a force using this equation:

Weight(N) = mass(kg) × gravity(m/s^2) 

That equation is called the weight force equation. it is very important

The number you convert  for the  pounds to kilograms is 2.2 so to calcuate how many kg are in 5lbs you divide 5 by 2.2 to get 2.27kg

Then we multiply 2.27kg by 9.81m/s^2 to get 22.30N 

So, now we know  that a force of 5lbs is greater than a force of 10N