Which paragraph from the section "More Tests, or Stronger Classes?" explains one problem with
Arizona's plan?

What are two different ways you could find the value of a? explain these methods.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?