PHYSICS HIGH SCHOOL

A solid wood door (???? = 1 3 ????(width) 2 ) 1.00 m wide and 2.00 m high is hinged along one side and has a total mass of 44.0 kg. Initially open and at rest, the door is struck at its center by a handful of sticky mud with mass 0.700 kg , traveling perpendicular to the door at 14.0 m/s just before impact. Find the final angular speed of the door in (rad/s).

Answers

Answer 1

Answer:

Answer:

$\omega =0.33\ rad/s$

Explanation:

given,

size of door = 1 m x 2 m

total mass = 44 Kg

mud mass attached = 0.700 Kg

speed of door = 14 m/s

angular speed of door = ?

conservation of angular momentum

initial angular momentum is equal to final momentum

$L_i = L_f$

$mvr = (I_(door)+I_(clay))* \omega$

$I_(door) = (1)/(3)MW^2$

$I_(door) = (1)/(3)* 44 * 1^2$

$I_(door) =14.67\ kg.m^2$

$I_(clay) = mr^2$

$I_(clay) = 0.7* 0.5^2$

$I_(clay) =0.175\ kg.m^2$

$0.7* 14* (1)/(2) = (14.67+0.175)* \omega$

$\omega =(4.9)/(14.845)$

$\omega =0.33\ rad/s$

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Answers

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What is ohm's law ?

Ohm's law is a law that states that the voltage across a resistor is directly proportional to the current flowing through the resistance

using ohm's law

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voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms of resistance will be 50 V

learn more about ohm's law

brainly.com/question/14874072?referrer=searchResults

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$U = R * I \rightarrow U = 10 * 5 = 50 V$

How do scientific tests help determine the properties of substances

Answers

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Answers

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Explanation:

Scientific notation is defined as the representation in which a number is expressed in the decimal form. That means always written in the power of 10 form. The decimal place is put after 1 digit.

We are given a numerical value of 157,821

Converting this into scientific notation, we get:

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Answers

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Answers

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