Please explain completely! Thank you! 4. Free fall in vacuum: a steel ball and a
ID: 3161478 • Letter: P
Question
Please explain completely! Thank you!
4. Free fall in vacuum: a steel ball and a pith ball with the same diameter are loaded into the top of a large tube, which is evacuated to create a very low- pressure environment. The two balls are released simultaneously from the same level to fall to the bottom of the tube. Which one of the following statements is true?
a.) Steel ball reaches the bottom first. Why?
b.) Pith ball reaches the bottom first. Why?
c.) Two balls reach the bottom simultaneously. Why?
Explanation / Answer
c) The two balls reach the bottom simultaneously. The tube being evacuated, air resistance on the on objects are absent. The only force acting on them is gravitational attractive force. In the same area tha gravitational for being same both of them fall together.