Directions: Use the formulas to solve the following problems. work = force X distance power = work done time needed 13. b. What power was used if it took 2 s? 14. b. How much power was used if it took them 60 s?
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Ответ:
B) (-2.0 m, 0.0 m)
Explanation:
Given:
Mass of particle 1 is,![m_1=2.0\ kg](/tpl/images/0456/4270/15ebd.png)
Mass of particle 2 is,![m_2=3.0\ kg](/tpl/images/0456/4270/6f0b0.png)
Position of center of mass is,![(x_{cm},y_{cm})=(0,0)](/tpl/images/0456/4270/4118f.png)
Position of particle 1 is,![(x_1,y_1)=(3.0\ m,0.0\ m)](/tpl/images/0456/4270/c4495.png)
Position of particle 2 is,![(x_2,y_2)=(?\ m,?\ m)](/tpl/images/0456/4270/14562.png)
We know that, the x-coordinate of center of mass of two particles is given as:
Plug in the values given.
We know that, the y-coordinate of center of mass of two particles is given as:
Plug in the values given.
Therefore, the position of particle 2 of mass 3.0 kg is (-2.0 m, 0.0 m).
So, option (B) is correct.