Questions
A sphere of mass M and radius R2 has a concentric cavity of radius R1 as shown in figure. The force F exerted by the sphere on a particle of mass m located at a distance r from the centre of sphere varies as
detailed solution
Correct option is B
F=0 when 0≤r≤R1because intensity is zero inside the cavity.F increase when R1≤r≤R2F∝1r2 when r>R2Talk to our academic expert!
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The percentage change in the acceleration of the earth towards the Sun from a total eclipse of the Sun to the point where the Moon is on a side of earth directly opposite to the Sun is
(Take r1 as the distance between the sun and the earth, r2 as the distance between the earth and the moon, Ms , Me and Mm are the masses of the sun, the earth and the moon respectively)
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