A lever is balanced. A force of 12 N acts at a distance of 40 cm from the pivot. What force acts at a distance of 8 cm on the other side?
Answer and explanation
Correct answer: D. 60 N
- Step 1: Balance: force1 x distance1 = force2 x distance2. Step 2. 12 x 40 / 8 = 60 N. Answer: 60 N. Why not the others: 2.4 N: the distances were used the wrong way round. 44 N: the numbers were added and subtracted. 38.4 N: the quantities were multiplied.
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