Calculation of the gravitational force. 1. What is the gravitational force (in N) on a proton at the surface of the Sun? 2. At a point mid way to the surface? The average density ρ of the Universe today is 3 × 10−27kgm−3 Find this density in (a) gcm^−3 (b) M⊙Mpc^−3 (c) mpcm^−3 2. Find the mass within a sphere
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Calculation of the gravitational force.
1. What is the gravitational force (in N) on a proton at the surface of the Sun?
2. At a point mid way to the surface?
The average density ρ of the Universe today is 3 × 10−27kgm−3
Find this density in (a) gcm^−3
(b) M⊙Mpc^−3
(c) mpcm^−3
2. Find the mass within a sphere of radius (a) R⊙ (b) 1 AU (c) 10 Mp
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