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2 years ago

Is the frictional force the same as the applied force when the net force equals zero?

Physics

1 answer:

DerKrebs [107]2 years ago

6 0

Answer:

Since the net force is to the right (in the direction of the applied force), then the applied force must be greater than the friction force. The friction force can be determined using an understanding of net force as the vector sum of all the forces.

Explanation:

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The potential of electrons in a circuit can be increased by the action of a battery.

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Explanation:

When pH of the solution is 11.

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A spinning wheel has a rotational inertia of 2 kg•m². It has an angular velocity of 6.0 rad/s. An average counterclockwise torqu

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Answer:

$-20.0 kg m^2/s$

Explanation:

The angular momentum of an object in rotation is given by

$L=I \omega$

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In this problem, initially we have

$I=2 kg m^2$ is the moment of inertia of the wheel

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So the initial angular momentum is

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$\alpha = \frac{\tau}{I}=\frac{-5.0}{2}=-2.5 rad/s^2$ in the direction opposite to the initial rotation.

As a result, the final angular velocity of the wheel will be:

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$\omega_f = +6.0 +(-2.5)(4.0)=-4 rad/s$

which means that now the wheel is rotating in the counterclockwise direction.

Therefore, the new angular momentum of the wheel is:

$L_f = I\omega_f =(2)(-4.0)=-8.0 kg m^2/s$

So, the change in angular momentum is:

$\Delta L=L_f - L_i = (-8.0-(12))=-20.0 kg m/s^2$

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3 years ago

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Answer: burning of the incense and air drift in the room

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Explanation:

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