Practice GIKI Physics questions with answers and explanations.
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Force equals pressure times area.
F=5000×0.02 = 100 N.
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Hydrostatic pressure is ρgh.
P=1000×10×5 = 50,000 Pa.
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The pressure is 100/0.01 = 10,000 Pa.
Output force is 10,000×0.20 = 2000 N.
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Buoyant force equals ρVg.
F=1000×0.03×10 = 300 N.
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For floating equilibrium, submerged fraction equals object density divided by fluid density.
750/1000 = 0.75.
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Volume flow rate is Q=Av.
Q=0.04×3 = 0.12 m³/s.
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Continuity gives A₁v₁=A₂v₂.
V₂=0.06×2/0.02 = 6 m/s.
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Strain is extension divided by original length.
0.004/2 = 0.002.
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Gravitational potential is a scalar quantity.
It represents work per unit mass associated with position.
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Gravitational force varies inversely with distance squared.
Doubling distance multiplies force by 1/2² = 1/4.
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Orbital objects still experience gravity.
They appear weightless because all parts accelerate together.
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Field strength is force per unit mass.
G=20/4 = 5 N/kg.
