3 years ago

Compared to the inertia of a 1-kilogram mass, the inertia of a 4-kilogram mass is

Physics

1 answer:

Mumz [18]3 years ago

5 0

Explanation:

The inertia of a 4 kg mass is four times as great as a 1 kg mass.

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The spring of a spring balance is 6.0 in. long when there is no weight on the balance, and it is 8.4 in. long with 4.0 lb hung f

Sergeeva-Olga [200]

Answer:

W = 55.12 J

Explanation:

Given,

Natural length = 6 in

Force = 4 lb, stretched length = 8.4 in

We know,

F = k x

k is spring constant

4 = k (8.4-6)

k = 1.67 lb/in

Work done to stretch the spring to 10.1 in.

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$W = \dfrac{k}{2}[x^2]_6^{10.1}$

$W = \dfrac{1}{2}\times 1.67\times (10.1^2-6.0^2)$

W = 55.12 J

Work done in stretching spring from 6 in to 10.1 in is equal to 55.12 J.

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An object that is oscillating on a spring is given by the equation x = (10.0 cm) cos[(6.00 s-1)t]. At what value of t after t =

Dmitrij [34]

Answer:

$t=0.0107\ \text{s}$

Explanation:

$x=10\cos(6t)$

Now $x=8\ \text{cm}$

Substituting the value of $x$ in the equation we get

$8=10\cos6t$

$\Rightarrow 0.8=\cos6t$

$\Rightarrow \cos^{-1}0.8=6t$

$\Rightarrow t=\dfrac{\cos^{-1}0.8}{6}$ the values here are used found in radians

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3 years ago

Compared to the inertia of a 1-kilogram mass, the inertia of a 4-kilogram mass is​

Compared to the inertia of a 1-kilogram mass, the inertia of a 4-kilogram mass is