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Question 6437
NEET Physics · Hard

Mechanical Properties of Fluids: Buoyancy MCQ

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BuoyancyHardQuestion 6437

Question

Object (m=100 g) fully submerged in liquid (ρ=0.8 g/cm³). Volume = 150 cm³. g=10 m/s². Net force:
  1. A
    0.2 N downward
  2. B
    0.2 N upward
    Correct
  3. C
    1 N upward
  4. D
    1 N downward

Correct answer

0.2 N upward

Explanation

The weight is 0.1×10=10.1×10=1 N downward. The buoyant force is 800×150×10−6×10=1.2800×150×10^{-6}×10=1.2 N upward. Therefore the net force is 0.2 N upward.

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