Question

Two identical trains $A$ and $B$ are running from west to east and east to west at equator. They move with the same speed
Statement 1: Pressure exerted by $B$ on the ground will be larger than pressure exerted by $A$
Statement 2: Both $A$ and $B$ move on circular tracks of radius equal to earth's radius

• A. Statement-1 is true, Statement-2 is false
• B. Statement-1 is false, Statement-2 is true
• C. Statement-1 is true, Statement-2 is true an Statement-2 is a correct explanation for Statement-1
• D. Statement-1 is true, Statement-2 is true bu Statement-2 is not a correct explanation fo Statement-1.

Answer 1

Answer: (D)

Statement-1 is true, Statement-2 is true but Statement- 2 is not a correct explanation for Statement-1. As the earth rotates from west to east, speed of $v_A$ w.r.t. earth's centre is greater than the speed of $v_B$. For circular motion of both bodies
$Mg-N=\frac{M{v}^2}{R}$
The body having greater speed, will have less $N$ and hence less pressure