Question 1128080
.
From any Physics textbook,


<pre>
    the centripetal acceleration  a = {{{v^2/r}}} = {{{50^2/2}}}  m/s^2.

    To get the number, use your calculator.




    The corresponding centripetal force = m*a.


    Substitute the values to get the number.
</pre>


If you have no Physics textbook on your table or on your book-shelve, you may look into this Wikipedia article


https://en.wikipedia.org/wiki/Centripetal_force



Learn from good sources !



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