Ameterstick of uniform density hanging from a string at 0.7 m, had two masses of 0.50 kg and 1.00 kg hung at 0.1 m and 1.0 m respectively to obtain static equilibrium. a calculation for placement of the masses to obtain static equilibrium was done prior to the setup and it came out to: (0.5 kg x 9.8 n/kg x 0.6 m) – (1.00 kg x 9.8 n/kg x 0.3 m) = τnet = 0 n*m however, the setup failed and static equilibrium was not achieved. what do you think went wrong with the setup and/or equation?

The weight of the meter stick is missing in the equation and it would have provided counterclockwise torque.

Explanation:

Given that,

Length of string = 0.7 m

One mass = 0.50 kg

Another mass = 1.00 kg

Distance = 0.1 m

The given equation is

...(I)

The length of the meter stick  is

According to the question,

The equation will be

...(II)

On comparing equation (I) and (II)

So,  the missing term is the torque of self weight of stick.

Hence, The weight of the meter stick is missing in the equation and it would have provided counterclockwise torque.

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

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