First slide

Acceeleration due to gravity on surface of planet

Question

Two identical trains A and B move with equal actual speeds on parallel tracks along the equator. A moves from east to west and B, from west to east. Which train will exert greater force on the tracks ?

Moderate

A

A
B

B
C

They will exert equal force
D

The mass and the speed of each train must be known to reach a conclusion

Solution

Earth spins from west to east.
Let $ω$ = Angular velocity of spin of earth.
R = Radius of earth.
u = Velocity of train relative to the surface of earth.
V = Absolute velocity of train relative to centre of earth.
$∴$ V_A = $u - Rω$
V_B = $u + Rω$
V_A < V_B
N = mg - mv²/R
N_A > N_B

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App