Question

An aircraft arresting system is design is use to stop airplanes whose braking system fails. If a 50 Mg alrplane moving initlal velocity is driven to rest and passengers are subjected to an average deceleration of 1.0 g (9.81 m / s-) on a time period of 10 seconds. Determine the initial maximum airplane's velocity [m / s]

An aircraft arresting system is design is use to stop airplanes whose braking system falls. If a 50 Mg airplane moving at an initial velocity is driven to rest and passengers are subjected to an average deceleration of 1.0 g(9.81 m/s2) on a time period of 10 seconds. Determine the initial maximum airplane's velocity [m/s]

Answer 1

Ans- This question can be easily be solved with help of equation of motion.

Let u be the initial velocity of aircraft and v be the final velocity.So v=0 as aircraft will come to rest. Average deacceleration experienced by aircraft a=-9.81m/sec² for timeperiod of 10 seconds

So using equation v-u=a*t

0-u=-9.81*10

So u=98.1 m/s

This is the required initial maximum speed of aircraft