Calculating the Mass of a Tractor Being Dragged by a Tow Truck on Wet Concrete

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In summary, the maximum mass of a tractor that can be pulled by a tow truck with a horizontal force of 1.0 * 10^4 N is 1457.72 kg, assuming the tractor starts from rest on a horizontal surface and the coefficient of kinetic friction is less than that of static friction.
  • #1
keyser.soze
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Homework Statement


The coefficient of limiting static friction of a rubber tire in wet concrete is 0.70. What mass of tractor, with its brakes locked, can be dragged by a tow truck that can exert a horizontal force of 1.0 * 10^4 N?


Homework Equations


Fnetx = ma

Ff = us*Fn

Fn = m*g

The Attempt at a Solution


10000 / (0.70*9.8) = 1457.72


Is that right??...Help NEEDED:confused:
 
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  • #2
What you calculated is the maximum mass of a tractor that can be moved, starting from rest on a horizontal surface, by a tow truck. Because the coeff. of kinetic friction is less than that of static friction, a more massive tractor could be pulled if it started with a nonzero speed. NOTE: I am just nitpicking the question, your solution seems fine to me.
 
  • #3
oo so thaz rite??
 
  • #4
yes, good.
 

1. What is a tow truck dragging a tractor?

A tow truck dragging a tractor is when a tractor needs to be moved from one location to another and is unable to move on its own. The tow truck uses a cable or chain to pull the tractor along the road or other surface.

2. How does a tow truck drag a tractor?

A tow truck has a winch or other mechanism that allows it to attach a cable or chain to the tractor. The cable or chain is then pulled by the tow truck, allowing the tractor to move along with it.

3. Is it safe to tow a tractor with a tow truck?

Yes, it is safe to tow a tractor with a tow truck as long as the tow truck driver follows proper safety procedures. This includes making sure the tractor is properly secured and the tow truck is equipped to handle the weight of the tractor.

4. What are the benefits of using a tow truck to drag a tractor?

The main benefit of using a tow truck to drag a tractor is that it allows the tractor to be moved without needing to be in working condition. This can save time and money compared to repairing the tractor or finding another way to move it.

5. Are there any risks associated with tow truck dragging a tractor?

There are some risks associated with tow truck dragging a tractor, such as potential damage to the tractor or the tow truck if proper precautions are not taken. It is important for the tow truck driver to have experience and training in towing heavy equipment to minimize these risks.

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