A thin horizontal circular disc is rotating about a vertical axis passing through its center. An insect is at rest at the point near the rim of the disc. The insect now moves along a diameter of the disc to reach other end. During the journey of the insect the angular speed of the disc.
A. remains unchanged
B. continuously decreases
C. continuously increases
D. first increases and then decreases
Answer:D
A thin horizontal circular disc is rotating about a vertical axis passing through its center. An insect is at rest at the point near the rim of the disc. The insect now moves along a diameter of the disc to reach other end. During the journey of the insect the angular speed of the disc.
A. remains unchanged B. continuously decreases C. continuously increases D. first increases and then decreases