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3 years ago

A 57 kg woman is on an elevator accelerating upward at "1.25" meters per second squared. what is the normal force acting on her?

Physics

1 answer:

ella [17]3 years ago

8 0

Answer:

Normal force acting on the woman is 629.85 N.

Explanation:

Given:

Mass of the woman is, $m=57\textrm{ kg}$

Net upward acceleration is, $a=1.25\textrm{ }m/s^{2}$

Acceleration due to gravity, $g=9.8\textrm{ }m/s^{2}$

Let the normal force acting upward be $R$ newtons.

Therefore, net force in the upward direction is given as:

Net force = Upward force - Downward force.

Downward force acting on the woman is her weight which is equal to $mg$ .

Therefore, Net force = $R-mg$

Now, as per Newton's second law of motion,

Net force, $F_{net}=ma$

So,

$R-mg=ma\\R=mg+ma\\R=m(g+a)$

Plug in 57 kg for $m$ , 9.8 m/s² for $g$ , and 1.25 m/s² for $a$ . Solve for $R$ . This gives,

$R=57(9.8+1.25)\\R=57(11.05)=629.85\textrm{ N}$

Therefore, the normal force acting on her is 629.85 N.

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An electron in a vacuum is first accelerated by a voltage of 81700 V and then enters a region in which there is a uniform magnet

Vilka [71]

Answer:

Magnetic force is equal to $1.37\times 10^{-11}N$

Explanation:

We have given electron is accelerated with a potential difference of 81700 volt.

Magnetic field B = 0.508 T

Angle between magnetic field and velocity $\Theta =90^{0}$

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By energy conservation.

$\frac{1}{2}mv^2=qV$

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$F=qvBsin\Theta$

$F=1.6\times 10^{-19}\times 169.4\times 10^6\times 0.508\times sin90^{\circ}$

$=1.37\times 10^{-11}N$

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2 years ago

Read 2 more answers

You fire a paintball from a paintball gun straight up into the air at 25.0 m/s. What is the ball velocity at the higher point th

iVinArrow [24]

Given :

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2 years ago

Alexis is a scientist who is studying solid-state physics. Which activity would she most likely do as a part of this research? O

Ann [662]

Answer:

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2 years ago

A 10.00 kg mass is moving to the right with a velocity of 14.0 m/s. A 12.0 kg mass is moving to the left with a velocity of 8.00

Basile [38]

Answer:

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Explanation:

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Hence, the significance of the seasonal aisle is aforementioned.

Learn more about on manager, here:

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