Why is it necessary to torque the mast slightly while the system is spinning? Wh

Question

Why is it necessary to torque the mast slightly while the system is spinning? Why don't we use Eq. 2 as the operative equation for this lab, instead of Eq. 3? What is the action/reaction partner force to the centripetal force? (Enter "up", "down", or "0" on each line.) What are the directions of the real net force and the fictitious force on a person in an elevator as the elevator car... ...starts climbing? ...slows its ascent? ...climbs with constant speed? ...starts descending? ...slows its descent? ...descends with constant speed? Why is question 4 included in a lab on circular motion, when elevators only undergo purely linear motion?

Explanation / Answer

Q. 4 Real Net force Fictious force

a) starts climbing down up

b) slows its decent down up

c) climbs with constant speed 0 0

d) start descending up down

e) slows its descent up down

f) descends with constant speed 0 0

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