Question

ज्ञात
9. कोई गाड़ी 76.032 किमी प्रति घण्टा की चाल से जा रही है। यदि
पहियों की त्रिज्या 42 सेमी हो तो ज्ञात कीजिए कि पहिये प्रति
सेकण्ड कितने चक्कर लगाते हैं?​

Answer 1

Step-by-step explanation:

speed =76.032 km/hr

radius of the Tyre is 42 cm

1 revolution = 2×22/7×r

the Tyre covers

2×22/7×42 =22×2×6

=264 cm

the Tyre completes 264 cm in 1 revolution.

76.032 km/hr =76032 m / 3600 seconds

the car travels 760.32/36 = 21.12 metre per second

21.12 metre = 2112 cm per second

number of revolutions per second

= distance travelled per second /distance covered in one second

= 2112 / 264

= 8

the Tyre takes 8 revolutions per second .

Answer 2

Answer:

Step-by-step explanation:

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