Asked by Physics: Centripetal acceleration?
An airplane flies at 120 km/h takes a 20 degree turn on 30 seconds.
a) What is the centripetal acceleration ?
b) from where does it get it's centripetal acceleration ?
a) What is the centripetal acceleration ?
b) from where does it get it's centripetal acceleration ?
Answers
Answered by
Damon
How far does it go in 30 seconds (1/2 minute)?
(1/2)min * 1 hr/60 min *120,000 m/hr
= 1000 meters
360/20 = 18
the circumference of the turn = 18,000 meters
2 pi r = 18,000
r = 2865 meters
Ac = v^2/r = (120,000/3600)^2 / 2865
= .388 m/s
Check my arithmetic !!
usually plane banks in a turn so a component of the lift on the wings is pointed toward the center of the circle.
(1/2)min * 1 hr/60 min *120,000 m/hr
= 1000 meters
360/20 = 18
the circumference of the turn = 18,000 meters
2 pi r = 18,000
r = 2865 meters
Ac = v^2/r = (120,000/3600)^2 / 2865
= .388 m/s
Check my arithmetic !!
usually plane banks in a turn so a component of the lift on the wings is pointed toward the center of the circle.
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