Answer:
sorry I am not getting dear friend
The angular velocity of the cockroach does not change as long as it rotates with the disk it has the same angular velocity as the disk but by changing the distance from the center of the disk the linear velocity changes (V=r×ω) because the radius changes.
in order to find the kinetic energy you can use this formula k=1/2 × m × V²
so k/k0 = (V/V0)² = (r/r0)²
where the subscripts 0 denotes to the initial position of the cockroach so r0=2×r then we have k/k0=1/4
Answer:
(A) The distance of the center of Planet X is m
(B) The speed of the satellite is
Explanation:
Given:
Mass of the planet kg
Time period days sec
(A)
From kepler's third law
Where
Now for finding the distance of planet X,
m
(B)
Speed of the satellite is given by,
Therefore, the speed of planet is