Using the definition of up in Question 37, which direction is up for each of the followi...

Using the definition of up in Question 37, which direction is up for each of the following situations?

a. A child rides near the outer edge of a merry-go-round.

b. A train’s dining car going around a curve turns to the right.

c. A skier skis down a hill with virtually no friction.

Reference of question 37

In an inertial reference system, we define up as the direction opposite the gravitational force. In a noninertial reference system, up is defined as the direction opposite the vector sum of the gravitational force and any inertial forces. Which direction is up in each of the following cases?

a. An elevator accelerates downward with an acceleration smaller than that of free fall.

b. An elevator accelerates upward with an acceleration larger than that of free fall.

c. An elevator accelerates downward with an acceleration larger than that of free fall.