Question

In an imaginary atmosphere, the air exerts a small force $F$ on any particle in the direction of the particle's motion. A particle of mass ' $m$ ' projected upward takes a time $t_{1}$ in reaching the maximum height and $t_{2}$ in the return journey to the original point then :

• A. $t_{1}
• B. $t_{1}>t_{2}$
• C. $t_{1}=t_{2}$
• D. The relation between $t_{1}$ and $t_{2}$ depends on the mass of the particle

Answer 1

Answer: (B)

Because in downward journey $F$ and $m g$ Both will act downward, while in upward journey only mg will act downward.