Physics, 13.12.2019 02:31 trapqueenriz12

Do number 8
respond fast
will mark brainliest
(this involves inclined planes)

Do number 8 respond fast will mark brainliest (this involves inclined planes)

Answers: 3

Show answers

Answers

Answer from: 19thomasar

We need to apply a force of magnitude 32.13 N

Explanation:

The forces acting on this crate are:

1) the crate's weight (which we can decompose in two components: one parallel to the incline, and the other one perpendicular to it) The parallel component of the weight is the product of the mass, times g (9.8 m/s^2) times sin(35). This component is pointing down the incline, and let's call it the "x" component. Its magnitude is given by:

$w_x=m\,\,g\,\,sin(35^o)$

The magnitude of the perpendicular component of the weight (let's call it the y-component) is given by the expression:

$w_y=m\,\,g\,\,cos(35^o)$

2) The force of friction between the crate and the surface of the incline (acting parallel to the incline and opposite the direction of the parallel component of the weight ( w_x )

3) The extra force we need to apply perpendicular to the incline and towards it (lets call it "E") so the crate doesn't slide down.

4) The normal force that the incline applies on the crate as reaction. This force is pointing away from the incline.

For the block not to move (slide down the incline), we need that the parallel component of the weight equals the force of friction with the surface of the incline. Let's call this force of friction f_s , and recall that it is defined as the product of the normal force times the coefficient of friction (given as 0.3 in value). This in equation form becomes:

$f_s=m\,g\,sin(35^o)\\\mu\,\,n=m\,g\,sin(35^o)\\n=\frac{m\,g\,sin(35^o)}{\mu} \\n=\frac{3\,*\,9.8\,\,sin(35^o)}{\0.3}\\n=56.21 \,\,N$

We solved for the needed magnitude of the normal force in order to keep the crate from sliding.

Now we study the forces vertical to the incline, which should also be balanced since the crate is not moving in this direction. We add all the forces acting towards the incline (the perpendicular component of the crate's weight, and the extra force "E"), and make them equal to the only force coming outwards (the normal force):

$n=E+m\,\,g\,\,cos(35^o)$

and we can solve for the magnitude of the extra force we need to apply by replacing all other known values:

$n=E+m\,\,g\,\,cos(35^o)\\56.21\,N=E+3\,*\,9.8\,\,cos(35^o)\,N\\E= [56.21-3\,*\,9.8\,\,cos(35^o)]\,N\\E=32.13\,N$

So this is the magnitude of the force we need to apply in order to keep the crate from sliding down the incline.

Answer from: Quest

The answer is as follows in the photo

Answer from: Quest

The particles of the gas inside the ball heats up, bouncing off each other and spreading farther apart.hope my answer has you : )

Another question on Physics

Physics, 21.06.2019 22:00

Na food processing facility, a spherical container of inner radius r1 5 40 cm, outer radius r2 5 41 cm, and ther- mal conductivity k 5 1.5 w/m · k is used to store hot water and to keep it at 100°c at all times. to accomplish this, the outer surface of the container is wrapped with a 800-w electric strip heater and then insulated. the temperature of the inner surface of the container is observed to be nearly 120°c at all times. as- suming 10 percent of the heat generated in the heater is lost through the insulation, (a) express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the container, (b) obtain a relation for the variation of temperature in the container material by solving the differential equation, and (c) evaluate the outer surface tempera- ture of the container. also determine how much water at 100°c this tank can supply steadily if the cold water enters at 20°c.

Answers: 2

Answer

Physics, 21.06.2019 23:00

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

Answers: 1

Answer

Physics, 22.06.2019 07:00

Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.

Answers: 3

Answer

Physics, 22.06.2019 07:30

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

Answers: 3

Answer

You know the right answer?

Do number 8
respond fast
will mark brainliest
(this involves inclined planes)

Questions