A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will
- A. Remain same
- B. Decrease
- C. Increase
- D. Increase/decrease depending on depth of immersion
Answer: C. Increase
Explanation: Due to Newton's 3rd law, the water exerts an upward buoyancy force on the iron, and the iron exerts an equal downward reaction force on the water, increasing the reading.