Conservation of Angular Momentum: a 5

question 18

Multiple Choice

Conservation of angular momentum: A 5.0-m radius playground merry-go-round with a moment of inertia of 2000 kg ∙ m² is rotating freely with an angular speed of 1.0 rad/s. Two people, each having a mass of 60 kg, are standing right outside the edge of the merry-go-round and step on it with negligible speed. What is the angular speed of the merry-go-round right after the two people have stepped on?

• A) 0.20 rad/s
• B) 0.40 rad/s
• C) 0.60 rad/s
• D) 0.80 rad/s
• E) 0.67 rad/s

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Definitions:

PLC Programs

Sequences of instructions written for a programmable logic controller (PLC) to direct the operation of machinery or processes.

Flash EEPROM

A type of non-volatile memory chip that can be electronically erased and reprogrammed, commonly used for storing firmware or settings that might need to be updated.

EEPROM

EEPROM, or Electrically Erasable Programmable Read-Only Memory, is a type of non-volatile memory used in computers and other devices to store small amounts of data that must be saved when power is removed.

Zener Diode

A type of semiconductor diode that allows current to flow in the forward direction like a normal diode, but also in the reverse direction when the voltage is above a certain value known as the breakdown voltage.