3 years ago

I need help :(((((((((((

Physics

1 answer:

Alex Ar [27]3 years ago

6 0

Answer:

4- false

5- false (i think..)

Explanation:

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A uniform cylindrical grinding wheel of mass 50.0 kg and diameter 1.0 m is turned on by an electric motor. The friction in the b

aliya0001 [1]

Answer:

The torque must be applied to the wheel is 15.7 N-m.

Explanation:

Given that,

Mass of the wheel of cylinder, m = 50 kg

Diameter of the wheel, d = 1 m

Radius, r = 0.5 m

Initial speed off the wheel is 0

Final angular speed of the wheel, 120 rev/min = 12.56 rad/s

Angular displacement, $\theta=20\ rev=125.6\ rad$

The torque is given by :

$\tau=I\alpha \\\\\tau=\dfrac{mr^2}{2}\times (\dfrac{\omega_f^2}{2\theta})\\\\\tau=\dfrac{50\times1^{2}}{2}\times(\dfrac{12.56^{2}}{2\times125.6})\\\\\tau=15.7\ N-m$

So, the torque must be applied to the wheel is 15.7 N-m.

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Cita ejemplos de una nación que viva en distintos estados.¿Por qué se da está situación?

Zanzabum

You can download $^{}$ the answer here

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A motor cycle travelling at 10 m/s accelerates at 4m/s for 8s.<br>what is it final velocity?

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Initial velocity=u=10m/s
Acceleration=a=4m/s^2
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Final velocity be v

$\\ \bull\tt\longmapsto v=u+at$

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