What Coefficient of Friction Keeps a Crate from Sliding on a Decelerating Truck?

In summary, the conversation discusses the determination of the coefficient of friction needed to keep a crate from sliding on a truck bed. The truck is traveling down a 15º incline and then begins to decelerate at a rate of 4 m/s. The conversation also considers the scenario of the truck accelerating up a 15º incline at 4m/s^2 and questions whether the required coefficient of friction would be the same. The conversation also mentions the need to calculate the forces acting on the crate and determining the starting point for this calculation.
  • #1
LittleWing
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Homework Statement



A truck is traveling down a 15º incline. The truck then begind to break (decelerate) at a rate of 4 m/s. A crate sits on top of the truck bed..Determine the coefficient of friction to keep the crate from sliding on the truck bed. If the truck were to accelerate up a 15º incline at 4m/s^2 would the required coefficient of friction be the same?

Homework Equations





The Attempt at a Solution



I know I have to calculate the forces acting on the crate but I can't figure outwhere to start without a mass..Did my prof leave something out?
 
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  • #2
What does Newton's second law of motion tell you about the forces acting on the box in the direction of the incline? And in what different ways can you define the forces acting on the box defined in terms of the data you have?

Specifically, what's the definition of the frictional force? The answer should then come to you.
Again, using Newton's second law of motion, you'll see the equation for the coefficient of friction is independent of mass.
 
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FAQ: What Coefficient of Friction Keeps a Crate from Sliding on a Decelerating Truck?

What is "crate on truck bed friction"?

"Crate on truck bed friction" refers to the force that resists the motion of a crate placed on a truck bed. This friction is caused by the interaction between the surfaces of the crate and truck bed.

How is "crate on truck bed friction" calculated?

The calculation of "crate on truck bed friction" involves measuring the coefficient of friction between the surfaces of the crate and truck bed, as well as the weight of the crate. The formula for calculating friction is force of friction = coefficient of friction x weight.

What factors affect "crate on truck bed friction"?

Several factors can affect "crate on truck bed friction," including the weight and size of the crate, the surface texture of the truck bed, and the presence of any lubricants or debris on the surfaces.

How can "crate on truck bed friction" be reduced?

To reduce "crate on truck bed friction," you can use a lubricant on the surfaces of the crate and truck bed, or modify the surface texture of the truck bed to reduce the coefficient of friction. Additionally, minimizing the weight of the crate can also help reduce friction.

Why is understanding "crate on truck bed friction" important?

Understanding "crate on truck bed friction" is important because it can affect the safety and efficiency of transporting goods on a truck. Excessive friction can cause the crate to shift or slide during transport, leading to potential damage or accidents. By understanding and managing this friction, you can ensure the safe and smooth transport of goods.

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