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2 years ago

14

A boy with a mass of 66 kg sits on a see-saw, 1.2 meters from the fulcrum. How far from the fulcrum will a 44-kg girl need to si

t to balance the boy?

1 answer:

dusya [7]2 years ago

3 0

<span>610 kg far from the fulcrum a 44-kg girl need to sit to balance the boy. </span>

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Two astronauts of mass 100 kg are 2 m apart in outer space. What is the

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The force of gravity between the astronauts is $1.67\cdot 10^{-7}N$

Explanation:

The magnitude of the gravitational force between two objects is given by:

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where :

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In this problem, we have two astronauts, whose masses are:

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While the separation between the astronauts is

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Substituting into the equation, we can find the gravitational force between the two astronauts:

$F=\frac{(6.67\cdot 10^{-11})(100)(100)}{2^2}=1.67\cdot 10^{-7}N$

Learn more about gravitational force:

brainly.com/question/1724648

brainly.com/question/12785992

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A 103 kg horizontal platform is a uniform disk of radius 1.71 m and can rotate about the vertical axis through its center. A 68.

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Answer:

$I_{total}=220.64 kg*m^{2}$

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$I_{total}=\frac{1}{2}*103kg*(1.71)^{2}+\frac{1}{2}*68.9kg*(1.09)^{2}+\frac{1}{2}*27.7kg*(1.45)^{2}$

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