Math, asked by siddiquasss786, 5 hours ago

a railway train is travelling on a circular path of 500m radius at the rate of 40km/hr . through what angle in degree has it moved in 10sec

Answers

Answered by palakmishraggps29
0

Answer:

train is moving on a circular curve of radius 1500m at the rate of 66km per hour. Through what angle has it turned in 10 seconds?

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Answer

Correct option is

B

45

11

rad

Radius of circular curve, R=1500m

Speed of trains, S=66 km/hr

Sonverting speed of train into m/sec

Speed of train =66×

18

5

=

3

110

m/s

Time travelled, t=10 sec

Distance converted, d=s×t

=

3

110

×10=

3

1100

m

circumference of circular curve, C=2πR

=2×

7

22

×1500

=

7

66000

m

As d<c, revolutions completed =0

Angles turned , θ=

c

d

×2π radians

=

(66000/7)

(1100/3)

×2×

7

22

=

180

44

radians

=

45

11

radians

Angle turned =

45

11

radians

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