A)
We know that the centripetal acceleration
a=w^2 ×r. 1rev=2π
here w= 10rev/s =10×2π =20π rad/s, r=60 cm =0.60m
a=(20π)^2×0.60
a=2368.70 m/s^2. Answer
10)
centripetal acceleration a=V^2/r
. Here V=90 km/h =90×1000 /3600 = 25 m/s
. Radius =r =50/2 = 25 m
so a=25^2/25
a=25 m/s^2. Answer
9. A ball attached to a string of length 60 cm is spun in a uniform...
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