pick the right answer
Tarzan swings on a vine, causing vertical circular
motion. Since he is quite strong, assume he doesn't
slip or let go of the vine. The following questions
are about Tarzan and his vine at the bottom of
his swing.
1. What is the direction of his acceleration?
(a) 
a
= 0, so no direction
(b) upwards along the vine
(c) downwards towards the ground
(d) horizontal along the ground
2. Which of the following is true?
(a) T > mg
(b) T = mg
(c) T < mg
(d) None of the above.
3. If the vine were to snap, what would be the new
direction of acceleration?
(a) a = 0, so no direction
(b) upwards along the vine
(c) downwards towards the ground
(d) horizontal along the ground
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