Question

The rotational inertia of a disk about its axis is 0.70 kg .m². When a 2.0 kg weight is added to its rim, 0.40m from the axis, the rotational inertia
becomes:
(a) 0.38 kg.m^2
(b) 0.54 kg.m^2
(c) 0.86 kg.m^2
(d) 1.0 kg.m^2​

Answer 1

Answer:

(d) 1.0 kg.m^2​

Explanation:

is correct

Answer 2

Answer:

d 1.0kg-m2

Explanation:

b/c i=mr2.......................