Question

At a given place where acceleration due to gravity is ' 8′m/s2, a sphere of lead of density 'd' kg/m3 is gently released in a column of liquid of density ρkg/m3. If d>ρ, the sphere will

• A. (A) fall vertically with an acceleration 'g'
• B. (B) fall vertically with no acceleration
• C. (C) fall vertically with an acceleration g(d−ρd)
• D. (D) fall vertically with an acceleration g(ρd)

Answer 1

Answer: (C)

(C) fall vertically with an acceleration g(d−ρd)

Answer 2

Explanation:
Apparent weight = actual weight - upthrustVdg′=Vdg−Vρg⇒g′=(d−ρd)g