Type of mechanism is mounted on the living room?

In summary, the conversation discusses a student's experiment involving a groove on the ceiling and a shadow on the floor. With the use of a ruler and stopwatch, the student determines that the mechanism on the living room is either a pendulum or a rotary wheel depending on the type of motion observed. There is also a mention of determining the velocity and position of a moving sphere and a question regarding simple harmonic motion.
  • #1
jaquecusto
12
0
http://sbtvd.anadigi.zip.net/images/camara.JPG
http://sbtvd.anadigi.zip.net/images/camara2.JPG

A student walks into a room with a groove on the ceiling. Turning off the lights, he sees a shadow moving the floor. With only a ruler and a stopwatch, the student is able to determine what type of mechanism is mounted on the living room?
 
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  • #2


Is there more to this or should I just make something up?
 
  • #3


More explanations:

In the first condition, the mechanism is a pendulum at normal oscilation. In the second case, the mechanism is a rotary wheel with single radius.

I suspect about student conclusion:
"In the both tests, by the shadow, it's impossible to determine the velocity and position of moving sphere at same time" :)
 
Last edited:
  • #4


Well if the student is a gifted experimentalist with accurate enough ruler and watch, he could check whether the motion is harmonic. If it is, it must be the rotary wheel, otherwise the pendulum.:smile:
 
  • #5


Or the reverse.
 
  • #6


vanhees71 said:
Well if the student is a gifted experimentalist with accurate enough ruler and watch, he could check whether the motion is harmonic. If it is, it must be the rotary wheel, otherwise the pendulum.:smile:

(emphasis added by me)

Vanadium 50 said:
Or the reverse.

Hint: does a pendulum really undergo simple harmonic motion?

(and has the OP's course discussed that point explicitly?)
 

What is the purpose of a mechanism in a living room?

The purpose of a mechanism in a living room is to provide functionality and convenience. It can help with tasks such as opening and closing doors, adjusting lighting, or controlling temperature.

What are the different types of mechanisms that can be mounted in a living room?

There are various types of mechanisms that can be mounted in a living room, including motorized mechanisms, mechanical mechanisms, and electronic mechanisms. Examples include automatic blinds, remote controlled ceiling fans, and smart home systems.

How does a mechanism in a living room work?

A mechanism in a living room typically works by utilizing a power source, such as electricity or batteries, to activate and control its movement. It may also involve various components such as gears, motors, and sensors to function properly.

What are the benefits of having a mechanism in a living room?

Having a mechanism in a living room can provide convenience, efficiency, and added functionality to the space. It can also enhance the overall aesthetic and comfort of the room.

Can a mechanism in a living room be controlled remotely?

Yes, many modern mechanisms in living rooms can be controlled remotely using a smartphone or a remote control. This allows for easy access and control from anywhere in the room.

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