The farther apart the two objects, the weaker the gravitational attraction between them.
<span>Taking into account the information above, we know the average mass of the bucket of water may be m=20-5/2=17.5kg. As the bucket of water is pulled at a "constant velocity" the work required to raise the bucket to the platform transformed into the potential energy of the bucket of water. That is why it should be W=mgh=17.5*9.8*40=6860J</span>
are you sure it's Thaivan or Taiwan. If it's Taiwan than it's Taipei.
Hope this help :))
I believe it’s C. Plane .
