Question

The weight (W) of an object at a depth of R/4 from the surface of the earth will be (R is the radius of the earth)

• A. Zero
• B. W/4
• C. W/2
• D. W

Answer 1

Answer: (B)

W/4

The apparent acceleration due to gravity at a depth d is given by $g^{\prime }=g(1-d/R)$.Substituting d=R/4, we get g' = g/4
Thus the apparent weight becomes W/4
The correct option is (b)