(b) What is the buoyant force on the block?

1. 5 N
2. 7.5 N
3. 12.5 N
4. 20 N
5. 30 N
6. 50 N
7. None of the above

(c) What percent of the block’s volume is submerged at the moment the string breaks?

1. Less than 25%
2. Greater than or equal to 25% but less than 40%
3. Greater than or equal to 40% but less than 50%
4. 50%
5. Greater than 50% but less than 75%
6. 75%
7. Greater than 75%
8. This is a trick question! The string doesn't break.

(d) When the block returns to equilibrium what percent of the block's volume is submerged?

1. 5%
2. 10%
3. 15%
4. 20%
5. 25%
6. 30%
7. None of the above