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3 years ago

Which way does the friction arrow go in a free body diagram for a moving object point

Physics

2 answers:

True [87]3 years ago

7 0

Answer:

Frictional force opposes relative motion between surfaces

Explanation:

Friction that exists when the object is not moving is called static friction. In static friction ,If we are applying a force in the object the frictional force is in the opposite direction . If it is not the case, there have been some net force and the object starts accelarating.

The main component of the contact force of two objects is normal force and that is in the perpendicular direction. Frictional force is other complnent. This frictional force is parallel to the interface between objects. Frictional force opposes relative motion between surfaces.

Oliga [24]3 years ago

7 0

Answer:

Frictional force opposes relative motion between surfaces

Explanation:

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About how many centimeters will make an inch?<br> 02<br> O 10<br> 100<br> 200

Tresset [83]

There is approximately 2.54 cm that equals to 1 inch. So your closet answer would be the first choice. :)

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3 years ago

Read 2 more answers

A person lifts a 25 kg box of old sports equipment at an angle of 75 degrees to the vertical to a shelf 2.6 meters above. How mu

kogti [31]

Answer:

164.87 J

Explanation:

From the question,

Work done (W) = mghcosθ........................ Equation 1

Where m = mass of the box, h = height, g = acceleration due to gravity, θ = angle to the vertical

Given: m = 25 kg, h = 2.6 meters, θ = 75°.

Constant: g = 9.8 m/s²

Substitute these value into equation 1

W = 25×9.8×2.6×cos75°

W = 164.87 J.

6 0

3 years ago

2. A large pack of snow of mass m sits at the top of a trail at a ski resort. Friction keeps the snow pack in place, but when it

Aleks [24]

Answer:

tanΘ

Explanation:

Let gravitational acceleration be g. When the avalanche starts to occur, the gravity force that is parallel to the slope is the same as friction force.

Gravity force that is parallel to the slope can be written as:

G = mgsinΘ

The friction force is the product of normal force and coefficient:

$F_f = N\mu$

where normal force N is the gravity in the direction perpendicular to the slope

$F_f = \mu mgcos\theta$

As stated before, gravity force that is parallel to the slope is the same as friction force:

$G = F_f$

$mgsin\theta = \mu mgcos\theta$

$\mu = sin\theta / cos\theta = tan\theta$

8 0

3 years ago

I NEED HELP??!!

user100 [1]

The material that transmits most light is d) clear glass.

Explanation:

Depending on whether objects can transmit light or not, they can be classified into three types:

Opaque: an object opaque does not transmit light at all (light cannot pass through an opaque object). Examples of opaque objects are metals
Translucent: translucent objects allow light to pass partially through them. Examples of translucent objects are fluids
Transparent: transparent objects allow light to pass through them. An example of transparent objects is clear glass

In this problem, we have the following objects: