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Chapter 5: Q44. (page 134)

A certain neutron star has five times the mass of our Sun packed into a sphere about 10 km in radius. Estimate the surface gravity on this monster.

Short Answer

Expert verified

The surface gravity on this monster is 6.63脳1012m/s2.

Step by step solution

01

Step 1. Given Data

The mass of the neutron star is mn=5ms.

The radius is r=10km.

02

Step 2. Understanding the gravitational acceleration

In this problem, for calculating the surface gravity on the certain neutron star the relation of gravitational acceleration will be utilized.

03

Step 3. Estimating the surface gravity of the star

The relation of gravitational accelerationis given by,

g=Gmnr2

Here, G is the gravitational constant.

On plugging the values in the above relation.

g=6.67脳10-11N路m2/kg251.99脳1030kg10km脳1000m1km2g=6.63脳1012m/s2

Thus, g=6.63脳1012m/s2is the required gravitational acceleration.

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