Question

A
mass of lokg at the end of a
string is being whirled in a circte
of radius 5 metre with speed of
4 meter per-second. What will be
centripetal force​

Answer 1

What is a centripetal force?

A centripetal force is a net force that acts on an object to keep it moving along a circular path.

In our article on centripetal acceleration, we learned that any object traveling along a circular path of radius rrr with velocity vvv experiences an acceleration directed toward the center of its path,

a = \frac{v^2}{r}a=  r v  2

Exercise 1: If m_1m  1 ​  m, start subscript, 1, end subscript is a 1~\mathrm{kg}1 kg1, space, k, g mass spinning in a circle of radius 1~\mathrm{m}1 m1, space, m and m_2 = 4~\mathrm{kg}m  2 ​  =4 kgm, start subscript, 2, end subscript, equals, 4, space, k, g what is theangular velocity assuming neither mass is moving vertically and there is minimal friction between the string and tube? [Solution]