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3 years ago

a body has weight 20N how much force is required to move it vertically upwards with an acceleration of 2m/s

Physics

1 answer:

kramer3 years ago

3 0

<h2>Given :-</h2>

Weight = 20 N

Acceleration = 2 m/s

Force applied=?

<h2>Solution :-</h2>

As we know that,

F is the Force applied
M is the Mass
A is the Acceleration

<u>According</u><u> </u><u>to</u><u> </u><u>the question</u><u>, </u>

F = 20 × 2

F = 40 N

<h3>Hence :-</h3>

Force applied is 40 N

First equation of motion
v = u + at

Second equation of motion
s = ut + ½at²

Third Equation of motion
v² - u² = 2as

$\begin{gathered} \\ \end{gathered}$

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Answer:

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Explanation:

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$2M_2V_1^2=0.5\times M_2V_2^2$

$2V_1^2=0.5\times V_2^2$

$4V_1^2= V_2^2$

$2V_1= V_2$ .................(1)

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$\frac{1}{2}M_1(V_1+9.0)^2=\frac{1}{2}M_2(V_2+9.0)^2$

$\frac{1}{2}2M_2(V_1+9.0)^2=\frac{1}{2}M_2(2V_1+9.0)^2$

$2(V_1+9.0)^2=(2V_1+9.0)^2$

$\sqrt{2}(V_1+9.0)=(2V_1+9.0)$

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$(2V_1-\sqrt{2}V_1)=(12.72-9.0)$

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Hence,

Speed of car 1 = $V_1=8.98m/s$

Speed of car 2 = $V_2=17.96m/s$

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Explanation:

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75% sure

Hope this helps!!!

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3 years ago

a body has weight 20N how much force is required to move it vertically upwards with an acceleration of 2m/s​

a body has weight 20N how much force is required to move it vertically upwards with an acceleration of 2m/s