Kinematics Question 725

Question: Certain neutron stars are believed to be rotating at about 1rev/sec . If such a star has a radius of 20 km, the acceleration of an object on the equator of the star will be [NCERT 1982]

Options:

A) 20×108m/sec2

B) 8×105m/sec2

C) 120×105m/sec2

D) 4×108m/sec2

Show Answer

Answer:

Correct Answer: B

Solution:

a=ω2r=4π2n2r=4π2×12×20×103 A=8×105 m/sec2



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