Answer:
False
Explanation:
The second you let go its gonna release kinetic energy that's why it's potential
Resultant force is 400-600=-200N.
-200=60a solve for a.
im sorry but i dont know, good luck at finding someone else who does.
Every point on the surface must have the same rotational speed.
Otherwise some places would rotate away from other places.
If the next block of your city rotated faster than the block that you live on,
then you could sit at home, look out the window, and watch your school
rotate past your house.
The map of the continents on the Earth would change constantly.