Question
Physics Question on Motion in a plane
What is approximately the centripetal acceleration (in units of acceleration due to gravity on earth, g=10m/s−2) of an air-craft flying at a speed of 400m/s through a circular arc of radius 0.6km ?
A
26.7
B
16.9
C
13.5
D
30.2
Answer
26.7
Explanation
Solution
Here, v=400ms−1,
r=0.6km=0.6×103m,
g=10ms−2
Centripetal acceleration,
ac=rv2
0.6×103m(400ms−1)2
=26.7×103ms−2
In the units of g(=10ms−2), the centripetal acceleration is 26.7.