A lever is balanced. A force of 80 N acts at a distance of 25 cm from the pivot. What force acts at a distance of 10 cm on the other side?
Answer and explanation
Correct answer: B. 200 N
- Step 1: Balance: force1 x distance1 = force2 x distance2. Step 2. 80 x 25 / 10 = 200 N. Answer: 200 N. Why not the others: 32 N: the distances were used the wrong way round. 95 N: the numbers were added and subtracted. 240 N: this value comes from a slip in the arithmetic.
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