Question

Suppose we replace both hover pucks with pucks that are the same size as the originals but twice as massive. Otherwise, we keep the experiment the same. Compared to the pucks in the video, this pair of pucks will rotate View Available Hint(s) Suppose we replace both hover pucks with pucks that are the same size as the originals but twice as massive. Otherwise, we keep the experiment the same. Compared to the pucks in the video, this pair of pucks will rotate four times as fast. at the same rate. one-fourth as fast. twice as fast. one-half as fast.

Answer 1

w = w₀ / 2 the angular velocity is half the initial value.

Step-by-step explanation:

We can analyze this exercise as if we added another disk to obtain a disk with twice the mass, for which if the system is two disks, the angular tidal wave is conserved

initial instant.

L₀ = I₀ w₀

final moment

L_f = I w

the moment is preserved

L₀ = L_f

I₀ w₀ = I w

the moment of inertia of a disk is

I = ½ m R²

we substitute

½ m R² w₀ = ½ (2m) R² w

w = w₀ / 2

for the case of a disk with twice the mass, the angular velocity is half the initial value.