Mass of a Torus in Spherical Coordinates

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SUMMARY

The discussion focuses on calculating the mass of a torus defined by the equation r=2sin(φ) in spherical coordinates, where the density is given by ρ=φ. The volume of the torus is determined using the triple integral formula: ∫(θ=0 to 2π) ∫(φ=0 to 2π) ∫(0 to f(θ, φ)) r² sin(θ) dr dθ dφ. The mass is then calculated using the integral: ∫(θ=0 to 2π) ∫(φ=0 to 2π) ∫(0 to f(θ, φ)) ρ(r, θ, φ) r² sin(θ) dr dθ dφ, which incorporates the specified density function.

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  • Understanding of spherical coordinates and their applications
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  • Knowledge of density functions in physics and mathematics
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pamsandhu
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consider a torus whose equation in terms of spherical coordinates(r,\theta,\phi) is r=2sin\phi for 0\le\phi\le2\Pi. determine the mass of the region bounded by the torus if the density is given by \rho=\phi.
 
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pamsandhu said:
consider a torus whose equation in terms of spherical coordinates(r,\theta,\phi) is r=2sin\phi for 0\le\phi\le2\Pi. determine the mass of the region bounded by the torus if the density is given by \rho=\phi.
Since you chose not to show any attempt to do this yourself, it is difficult to know what advice would help. Do you, at least, know that the volume of a torus given by r= f(\theta, \phi) is \int_{\theta= 0}^{2\pi}\int_{\phi= 0}^{2\pi}\int_0^{f(\theta, \phi)} r^2 sin(\theta)drd\theta d\phi and so the mass of such an object with density given by \rho(r,\theta, \phi) is \int_{\theta= 0}^{2\pi}\int_{\phi= 0}^{2\pi}\int_0^{f(\theta, \phi)}\rho(r,\theta,\phi) r^2 sin(\theta)drd\theta d\phi?
 
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