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.

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

hypothesising or postulating