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Grade 11Modern Physics

A semicircular wire has a length L and mass M. A particle of mass m is placed at the centre of the circle.find gravitational attraction on the particle due to the wire

Mohnish Singh

13 Years agoGrade 11

1 Answer

Arun Kumar

12 Years ago

If we see only horizontal component will remain.

$dF=Gmsin(\theta)dM/R^2 \\=>dF=G*m*sin(\theta)M(Rd\theta)/L \\=>\int_{0}^{F} dF=GMm/R\int_{0}^{\pi}sin(\theta)d\theta \\=>F=GMm2/R$

Arun Kumar

IIT Delhi

Askiitians Faculty

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