NEET 2020 Model Question Paper 1

Consider the circle with centre at O, and having radius R. In it consider three bodies of masses M each moving with velocity v under the action of their gravitational attraction. OD=

L

2

L

2

R‌cos‌30°⇒L=R√3
Centripetal force on any one mass M =

2GM2

L2

‌cos‌30°
∴

Mv2

R

=

2GM2

L

×

√3

2

⇒

v2

R

=

GM

(R√3)2

√3
⇒v2=

GM

R√3

∴v=√

GM

√3R