A sphere of mass M and radius
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 (0≤ r≤ ∝)
Answer: b
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a