3 years ago

Which object is in static equilibrium

Physics

2 answers:

Gelneren [198K]3 years ago

6 0

Answer:

a book that has no net force acting on it and is sitting on a table

Explanation:

edge2020

balu736 [363]3 years ago

3 0

Answer:

The body is said to be in static equilibrium if the net force acting on a body at rest is zero.As the net force is zero,the body will not undergo motion.

Explanation:

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which of this is not example of simple machine? A) a crowbar,B)a knife,C)a bicycle,D)a wheelchair ramp

DaniilM [7]

B. Knife HOpe this helps :3

3 0

4 years ago

find the angle between two forces of magnitude 27N and 30N if the magnitude of the resultant of the two force is 8N

lara31 [8.8K]

Answer:

The angle between two forces is 165 degrees.

Explanation:

We have,

Force 1, $F_1=27\ N$

Force 2, $F_2=30\ N$

Resultant of two forces, F = 8 N

It is required to find the angle between two forces. The resultant of two force is given by the formula as follows :

$F=\sqrt{F_1^2+F_2^2+2F_1F_2\cos\theta}$

$\theta$ is the angle between F₁ and F₂

So,

$F^2=F_1^2+F_2^2+2F_1F_2\cos\theta\\\\\cos\theta=\dfrac{F^2-F_1^2-F_2^2}{2F_1F_2}\\\\\cos\theta=\dfrac{(8)^2-(27)^2-(30)^2}{2\times 27\times 30}\\\\\cos\theta=-0.966\\\\\theta=\cos^{-1}\left(-0.966\right)=165^{\circ}$

So, the angle between two forces is 165 degrees.

6 0

3 years ago

The weight of a body above sea level varies inversely with the square of the distance from the center of Earth. If a woman weigh

Serjik [45]

Answer:

89.16pounds

Explanation:

The equation that defines this problem is as follows

W=k/X^2

where

W=Weight

K= proportionality constant

X=distance from the center of Earth

first we must find the constant of proportionality, with the first part of the problem

k=WX^2=131x3960^2=2054289600pounds x miles^2

then we use the equation to calculate the woman's weight with the new distance

W=2054289600/(4800)^2=89.16pounds

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3 years ago

The length and width of a rectangle are 1.82 cm and 1.5 cm respectively. Calculate area of the rectangle and write in correct si

Nezavi [6.7K]

Answer:

Hey mate ,

Area of rectangle = l×b

1.82×1.5

2.73cm2

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3 years ago

If the speed is c=3.00•80 m/s and the frequency is 1030kHz=1030•30 Hz what’s the wavelength

Nana76 [90]

Answer:0.3meters

Explanation:

wavelength=velocity ➗ frequency

wavelength=300.80 ➗ 1030.80

Wavelength=0.3m

8 0

3 years ago