A balanced lever has two weights on it, one with mass #2 kg# and one with mass #8 kg#. If the first weight is # 4 m# from the fulcrum, how far is the second weight from the fulcrum?

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Answer 1 · 2016-12-15T06:42:48

The distance is #=1m#

In a state of equilibrium, the moments about the fulcrum of the weights are equal.

Let #d=# distance of second weight from the fulcrum

Moment of first weight #=2g*4 Nm#

Moment of second weight #=8g*d Nm#

So,

#2g*4=8g*d#

#d=1m#