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Rus_ich [418]
3 years ago
15

Elements in an blank or blank of the periodic table have similar characteristics

Physics
1 answer:
mr_godi [17]3 years ago
6 0
Don't know if this is a True/False questions but that is true

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Suppose that you are holding a pencil balanced on its point. If you release the pencil and it begins to fall, what will be the a
Naily [24]

Answer:

The angular acceleration of the pencil<em> α  = 17 rad·s⁻²</em>

Explanation:

Using Newton's second angular law or torque to find angular acceleration, we get the following expressions:

    τ = I α                              (1)

    W r = I α                          (2)

The weight is that the pencil has is,

   sin 10 = r / (L/2)

   r = L/2(sin(10))

 

The shape of the pencil can be approximated to be a cylinder that rotates on one end and therefore its moment of inertia will be:

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Thus,

   mg(L / 2)sin(10) = (1/3 m L²)(α) 

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