Problem: A meter stick is supported by a knife-edge at the 50-cm mark. Doug hangs masses of 0.40 and 0.60 kg from the 20-cm and 80-cm marks, respectively. Where should Doug hang a third mass of 0.30 kg to keep the stick balanced?a. 20 cmb. 70 cmc. 30 cmd. 25 cm

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Problem Details

A meter stick is supported by a knife-edge at the 50-cm mark. Doug hangs masses of 0.40 and 0.60 kg from the 20-cm and 80-cm marks, respectively. Where should Doug hang a third mass of 0.30 kg to keep the stick balanced?

a. 20 cm

b. 70 cm

c. 30 cm

d. 25 cm

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Equilibrium with Multiple Objects concept. You can view video lessons to learn Equilibrium with Multiple Objects. Or if you need more Equilibrium with Multiple Objects practice, you can also practice Equilibrium with Multiple Objects practice problems.

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Becker's class at TAMU.