3 years ago

PLEASE HELP WITH THIS QUESTIONWhat of Newton's 3 laws is this picture

Physics

1 answer:

Reptile [31]3 years ago

7 0

Answer:

Hey

Newtons 1rst law (the penny isint moving, it will remain that way)

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A large volume of the solar system's space is occupied by what?

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Junk from our atmosphere

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Interactive Solution 9.37 presents a method for modeling this problem. Multiple-Concept Example 10 offers useful background for

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21.67 rad/s²

208.36538 N

Explanation:

$\omega_f$ = Final angular velocity = $\dfrac{1}{6}78=13\ rad/s$

$\omega_i$ = Initial angular velocity = 78 rad/s

$\alpha$ = Angular acceleration

$\theta$ = Angle of rotation

t = Time taken

r = Radius = 0.13

I = Moment of inertia = 1.25 kgm²

From equation of rotational motion

$\omega_f=\omega_i+\alpha t\\\Rightarrow \alpha=\dfrac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha=\dfrac{13-78}{3}\\\Rightarrow \alpha=-21.67\ rad/s^2$

The magnitude of the angular deceleration of the cylinder is 21.67 rad/s²

Torque is given by

$\tau=I\alpha\\\Rightarrow \tau=1.25\times -21.67\\\Rightarrow \tau=-27.0875$

Frictional force is given by

$F=\dfrac{\tau}{r}\\\Rightarrow F=\dfrac{-27.0875}{0.13}\\\Rightarrow F=-208.36538\ N$

The magnitude of the force of friction applied by the brake shoe is 208.36538 N

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3 years ago

PLEASE HELP WITH THIS QUESTIONWhat of Newton's 3 laws is this picture​

PLEASE HELP WITH THIS QUESTIONWhat of Newton's 3 laws is this picture