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2 years ago

What is the rotational inertia of the bug-rod-spheres system about the horizontal axis through the center of the rod

Physics

1 answer:

Inga [223]2 years ago

6 0

Answer:

C) 5ML^2

Explanation:

2 Spheres of mass M

Bug's mass 3M

Rod length 2L, radius L

Find Rotational Inertia I

I=Σmr^2

I=(3M+M+M)L^2

I=5ML^2

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1-A train travels 100 km to reach town A in one hour and 15 min. The train stops at station A for 45 minutes. Then it travels 15

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Answer 1) : 62.5 km/hour is the average velocity of the train.

2) The final velocity of the car at the end of 75 m is 14.69 m/s

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2) The acceleration of the car, a= 1.2 $m/s^2$

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Initial velocity of the car , $v_i$ = 6 m/s

Final velocity of thre car , $v_f$ =?

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$v_{f}^2=v_{i}^2+2as=(6 m/s)^2+2\times 1.2 m/s\times 75 m=216 m^2/s^2$

$v_{f}=14.69 m/s$

The final velocity of the car at the end of 75 m is 14.69 m/s

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