Gravitation-Universal Law of Gravitation (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 1 - 2 of 2

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Question number: 1

» Gravitation » Universal Law of Gravitation

Appeared in Year: 2010

MCQ▾

Question

A certain planet completes one rotation about its axis in time T. The weight of an object placed at the equator on the planet’s surface is a fraction f (f is close to unity) of its weight recorded at a latitude of 600. The density of the planet assumed to be a uniform perfect sphere is given by –

Choices

Choice (4) Response

a.

4f1+f3π4GT2

b.

43f1f3π4GT2

c.

4f1f3π4GT2

d.

42f1f3π4GT2

Question number: 2

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

A hanging wire is 170 cm long having a bob of 1.50 kg. It shows a time period of 1.35 s on a Planet Newtonia. If the circumference of Newtonia is 5.16×107m , find the mass of the planet.

Choices

Choice (4) Response

a.

3.72×1025kg

b.

3.15×1025kg

c.

9.25×1024kg

d.

3.22×1024kg

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