At t 2, the angular velocity is zero, with a non-zero (positive) angular acceleration. At that time, the direction of rotation for BC is changing from CW to CCW. In summary, you should never assume ...

This happens because angular momentum is conserved. Angular momentum is an object's moment of inertia times its angular velocity. If one of the latter two increases, the other decreases, and vice ...

The angular velocity will then bey 2π divided by this time. I did this for five different lengths using a hanging mass of 50 grams and a swinging mass of 15.8 grams.

At the first position, the person has an angular velocity and moment of inertia of: Quick note: the "2" subscript is there because this is after the person jumped off the merry go round.

American Journal of Botany, Vol. 67, No. 8 (Sep., 1980), pp. 1218-1224 (7 pages) Strobe photographs were taken of over 200 spinning samaras from seven species of trees. These were used to measure the ...