Question

a body of mass M is moving in a horizontal circle of radius R if the centripetal force is F the kinetic energy of a body is what​

Answer 1

Explanation:

K

Centripetal force =

r

mv

2

=

r

2

k

...(given)

Kinetic Energy =

2

1

mv

2

=

2

1

r

k

Potential Energy =−∫

∞

r

Fdr

the lower limit has been taken as∞ because potential energy is zero at infinty

=−∫

∞

r

r

2

k

dr

=−k∫

∞

r

r

−2

dr

=−k

∣

∣

∣

∣

−1

r

−1

∣

∣

∣

∣

∞

r

=

r

−k

Total energy =

2r

k

−

r

k

=−

2r

k

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Answer 2

Explanation:

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