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yKpoI14uk [10]
4 years ago
15

A physical pendulum consists of a vertical board of of mass 6.12 kg, length 191 cm, and width 12 cm hanging from a horizontal, f

rictionless axle. A bullet of mass 143 g and a purely horizontal speed v impacts the pendulum at the bottom edge of the board. The board then makes a complete circle.
(a) If the bullet passed through the board, reducing its speed by a factor of 1/3, what is the minimum speed of the bullet?
(b) If the bullet embedded itself in the board, what is the minimum speed of the bullet?

Note (hint from instructor): It appears you may use Conservation of Energy to find angular speed. For potential energy: use center of mass. For kinetic energy, use impulse. Then, to find initial speed, use conservation of angular momentum.

Physics
1 answer:
LiRa [457]4 years ago
8 0

Answer

A. 229.192m/s

B 158.6m/s

Explanation:

See attached file

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Answer:

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Explanation:

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3 years ago
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What is the velocity of a proton that has been accelerated by a potential difference of 15 kV? (i)\:\:\:\:\:9.5\:\times\:10^5\:m
andre [41]

Answer:

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Explanation:

It is given that,

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Using the conservation of energy as :

\dfrac{1}{2}mv^2=qV

q is the charge of proton

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v=\sqrt{\dfrac{2qV}{m}}

v=\sqrt{\dfrac{2\times 1.6\times 10^{-19}\ C\times 15\times 10^3\ V}{1.67\times 10^{-27}\ kg}

v=1695361.75\ m/s

v=1.69\times 10^6\ m/s

or

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In this problem, you will answer several questions that will help you better understand the moment of inertia, its properties, a
scoundrel [369]

Answer:

a)  Total mass form, density and axis of rotation location are  True

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Explanation:

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Where r is the distance from the pivot point and m the difference in body mass

In general, mass is expressed through density

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Let's examine the statements, the moment of inertia depends on

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4 0
3 years ago
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IgorC [24]
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