A heavy sphere has attained terminal speed while falling through a viscous liquid. Which statement is correct?
Options

Question

A heavy sphere has attained terminal speed while falling through a viscous liquid. Which statement is correct?

G1 Physics · Accepted Answer

At terminal speed, a = 0. Hence the net force on the sphere is zero. For a downward-moving heavy sphere, W − B − F(viscous) = 0. Therefore, W = B + F(viscous). Correct option: C.