How Does Kinetic Friction Impact Acceleration on an Inclined Plane?

In summary, the problem involves a block of mass 2M on a ramp with a 30 degree angle and a string connecting it to a pulley, which then leads to a block of mass M. With only two equations and three unknown variables, it is not possible to solve for the magnitude of acceleration. The speaker also mentions having multiple choice options and being unable to match the provided solution. They ask for help in finding the two equations and where they may have made an error.
  • #1
LM06
2
0
The coefficient of kinetic friction between the block and the incline is 0.29. What is the magnitude of the acceleration of the suspended block as it falls? Disregard any pulley mass or friction.

That's the question. I'll try to describe the accompanying diagram.:

Basically there's a ramp sloping downwards to the right at an angle of 30 degrees. On the ramp is a block of mass 2M in motion. A string tied to the right end of the object leads down and right to the end of the ramp where it is connected to a pulley. The string passes through the pulley and extends directly downwards to an block of mass M.

I don't believe it is possible to solve this problem since too little information is given and you end up having three unknown variables and only two equations. There were five choices given, as it was a multiple choice question, so I should know if the solution provided matches one of the choices.
 
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  • #2
LM06 said:
I don't believe it is possible to solve this problem since too little information is given and you end up having three unknown variables and only two equations.
Please show the two equations you end up with and where you got stuck. Assuming you've found the two equations correctly--by applying Newton's 2nd law to each mass--you should be able to combine them to find the acceleration.
 
  • #3


Without knowing the mass of the suspended block, it is not possible to determine the acceleration of the system. The mass of the suspended block would play a crucial role in determining the net force acting on the system and therefore the acceleration. Additionally, the length of the ramp and the angle of incline could also affect the acceleration. More information is needed in order to solve this problem accurately.
 

Related to How Does Kinetic Friction Impact Acceleration on an Inclined Plane?

What is an incline slope problem?

An incline slope problem is a physics problem that involves determining the forces acting on an object that is on an incline or slope. The goal is usually to find the acceleration or velocity of the object.

What are the key factors in solving an incline slope problem?

The key factors in solving an incline slope problem are the mass of the object, the angle of the incline, and the forces acting on the object, including gravity and friction.

How do you calculate the normal force in an incline slope problem?

The normal force is equal to the component of the object's weight that is perpendicular to the incline. It can be calculated using the formula FN = mg cos θ, where m is the mass of the object, g is the acceleration due to gravity, and θ is the angle of the incline.

What is the relationship between the angle of the incline and the acceleration of the object?

The acceleration of the object is directly proportional to the sine of the angle of the incline. As the angle increases, the acceleration also increases. This relationship can be expressed as a = g sin θ, where g is the acceleration due to gravity.

What is the difference between a frictionless incline slope problem and one with friction?

In a frictionless incline slope problem, there is no opposing force that acts against the motion of the object. In a problem with friction, there is an additional force acting on the object that must be taken into account in the calculations. This force is usually represented as Ff = μFN, where μ is the coefficient of friction and FN is the normal force.

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