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3 years ago

What is the formula to used to find work?

Physics

1 answer:

liubo4ka [24]3 years ago

7 0

Answer:

W = F × D

Explanation:

Hi there! I'm glad I was able to help you!

The formula we use to calculate work is shown below:

W = F × D

W = WORK

F = FORCE

D = DISTANCE

For example, let's say you're holding a box with both of your hands, keeping it still. Sure, holding the box requires some amount of effort, no matter the weight or size, but since you aren't moving the box up and down, no work is being applied.

If you slowly raise the box into the air, however, work is being done on the box. It still requires effort, but you're applying force on the box, raising it x amount of distance into the air.

This is where the variables W, F and D come from.

I hope this helped you! Comment below if I can assist with anything else! :)

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Answer:

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Explanation:

Let the mass of car be 'm' and coefficient of static friction be 'μ'.

Given:

Speed of the car (v) = 40.0 m/s

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As the car is making a circular turn, the force acting on it is centripetal force which is given as:

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$f=\mu N$

As there is no vertical motion, therefore, $N=mg$ . So,

$f=\mu mg$

Now, the centripetal force is provided by the frictional force. Therefore,

Frictional force = Centripetal force

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Plug in the given values and solve for 'μ'. This gives,

$\mu = \frac{(40\ m/s)^2}{200\ m\times 9.8\ m/s^2}\\\\\mu=\frac{1600\ m^2/s^2}{1960\ m^2/s^2}\\\\\mu=0.816$

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2 years ago

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<h3>What is weight?</h3>

Weight can be defined as the force acting on an object or a physical body due to the effect of gravity. Also, the weight of an object (body) is typically measured in Newton.

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