To throw a discus, the thrower holds it with a fully out-stretched arm. starting from rest, he begins to turn with a con-stant angular acceleration, releasing the discus after making one complete revolution. the diameter of the circle in which the discus moves is about 1.8 m. if the thrower takes 1.0 s to complete one revolution, starting from rest, what will be the speed of the discus at release?

11.3m/s

Explanation:

We can find the solution through the rotational motion of the discus,

Where,

Solving to find ,

Therefore we can find the final angular velocity, through the rotational motion equation given by,

Substituting,

The diameter of the circle is 1.8m, then the ratio will be the half, i.e,

The relation between linear velocity and angular velocity is

small = small current large mag large current

1 the 4 is sig