Chapter 5 Circular Motion; Gravitation

Answer sheet.

1. A bucket of water can be whirled in a vertical circle without the water spilling out, even at the top of the circle when the bucket is upside down.  Explain.

2. You are a passenger in a car and not wearing your seat belt.  Without increasing or decreasing its speed, the car makes a sharp left turn, and you find yourself colliding with the right-hand door.  Which is the correct analysis of the situation and why?

   A. Before and after the collision, there is a rightward force pushing you into the door.

   B. Starting at the time of the collision, the door exerts a leftward force on you.

   C. While the car is turning, a force throws you to the right, where you hit the door.

3. Estimate the magnitude of the velocity of an object in Indianapolis due to the rotation of the Earth.

4. Are there any thoughts you wish to share, whether they are about this assignment, the reading (what seems impossible, what makes no sense, what you'd like to spend time on in class, what you really found interesting etc) or the course?