- #1

bmchenry

- 10

- 0

R is radius of disc, l is length of rod holding pendulum

When I solved for the velocity of the disk using v2 = g r tanθ where r =R +lsin(theta)

the nswer was incorrect and it asked me if I solved for the velocity of the bob and not the disk, Which I guess I did beciase I got 1.88m/s. The answer in the book for the problem with the same numbers except theta is 45 was 0.89m/s.

I assume if the angle is smaller in my problem the speed would be less than 0.89, is this correct?

Can anyone explain what I did wrong?

Sorry I do not know how to get the diagram into the question