Question on: JAMB Physics - 2024
Calculate the upthrust on a spherical ball of volume 4.2 x 10-4 m3 when totally immersed in a liquid of density 1028 kg/m3
A
5.2N
B
4.3N
C
3.0N
D
2.4N
Ask EduPadi AI for a detailed answer
Correct Option: B
The upthrust is calculated using Archimedes' principle: Upthrust = ρ V g, where:
- ρ is the density of the liquid (1028 kg/m³)
- V is the volume of the ball (4.2 x 10-4 m³)
- g is the acceleration due to gravity (≈ 9.8 m/s²)
Calculate the upthrust:
Upthrust = 1028 * 4.2 x 10-4 * 9.8 ≈ 4.22 N
The closest option to the calculated upthrust is 4.3 N.
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