3 years ago

12. What is the net force on a 1-kg apple held at rest in your hand?

Physics

1 answer:

Fudgin [204]3 years ago

3 0

The apple is not accelerating. That's a big tip off that the net force acting on it is zero.

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Sam is walking at 2m/s down the hallway when he realized he will be late to class. He speeds up to 4m/s and makes it to English

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Answer:

.5 m/s²

Explanation:

a= (vf-vi)/t

a= (4-2)/4

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3 years ago

What is the moment of inertia of an object that rolls without slipping down a 3.5-m- high incline starting from rest, and has a

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Answer:

I = 0.287 MR²

Explanation:

given,

height of the object = 3.5 m

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Using total conservation of mechanical energy

change in potential energy will be equal to change in KE (rotational) and KE(transnational)

PE = KE(transnational) + KE (rotational)

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v = r ω

$mgh = \dfrac{1}{2}mv^2 + \dfrac{1}{2}\dfrac{Iv^2}{r^2}$

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$I = \dfrac{mr^2(2\times 9.8 \times 3.5 - 7.3^2)}{7.3^2}$

$I =mr^2(0.287)$

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Explanation:

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