- #1

MathematicalPhysicist

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A mass m whirls around on a string which passes through a ring, ngelect gravity.

initially the mass is distance r0 from the centre and is revolving at angular velocity w0.

the string is pulled with constant velocity V starting at t=0 so that the radial distance to the mass decreases.

obtain a differential equation for w(t).

here what i did:

v'=w0r0

r(t)=r0+Vt

v'=w(t)*r(t)

w(t)r(t)=w0r0

but from the text this isnt correct, can someone help me here?