The earth rotates on its own axis once in 24hrs. What is the speed in km/hr of a place whose latitude is 30S. (Take 2pi R to be equal to 40000km)
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Step-by-step explanation:
2
π
R
=
40
,
000
R
=
40
,
000
2
π
R
=
20
,
000
π
cos
30
=
r
R
cos
30
=
r
20
,
000
π
r
=
20
,
000
cos
30
π
km
Distance
=
2
π
r
Time taken
=
24
hrs
Speed = Distance/Time taken
= 1,443 km/hr
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