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irinina [24]
3 years ago
9

Given a force of 90 N and a acceleration of 30 m/s/s, what is the object’s mass?

Physics
2 answers:
vladimir2022 [97]3 years ago
7 0
The object’s mass is 3
marishachu [46]3 years ago
3 0
3 is the mass of the object
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Answer:

See the answer below

Explanation:

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A 20 kg wagon is pulled along the level ground by a rope inclined at 30 degree above the horizontal. A friction force of 30 N op
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(a) 34.6 N

To solve the problem, we have to analyze the forces acting along the horizontal direction.

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F cos \theta

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- Backward: the force of friction, which is

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F cos \theta - F_f = ma

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(b) 43.9 N

In this case, the acceleration is

a=0.40 m/s^2

So, the equation of motion in this case is

F cos \theta - F_f = ma

So this time we have to take into account the term (ma).

Using the  same data as before:

m = 20 kg

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We find the new magnitude of F:

F=\frac{ma+F_f}{cos \theta}=\frac{(20)(0.40)+30}{cos 30}=43.9 N

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Answer:

\huge\star{\underline{\mathtt{\blue{Answer}}}}\huge\star...

<h2>PE=<em>work done</em></h2><h2><em>m</em><em>gh</em><em>=</em><em>2</em><em>0</em><em>×</em><em>1</em><em>0</em><em>×</em><em>2</em><em>0</em><em>.</em><em>.</em></h2>

\huge\boxed{\fcolorbox{white}{blue}{mgh=4000}}

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<em>I </em><em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

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