Arod of negligible mass is pivoted at a point that is off-center, so that length ? 1 is different from length ? 2. the figures show two cases in which masses are suspended from the ends of the rod. in each case the unknown mass m is balanced by a known mass m1 or m2 so that the rod remains horizontal. ttl mi e1 tn

what is the value of m in terms of the known masses?

1. m = p m1 m2

2. m = m1 m2

3. m = m1 + m2 2

4. m = m1 m2 2

5. m = m1 + m2

Explanation:

Two casess are mentioned in the given figure

first case

two mass m and M_1

m is l_1 distance from center and M_1 is l_2 distance from center

second case

two mass m and M_2

m is l_2 distance from center and M_2 is l_1 distance from center

The balance in the  1st case requires

And the balance in second case  

Cancel

from  the above equations.

So, i.e.

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

reserve is the answer