Vertical friction required of a block between two walls?

In summary, the problem involves a stationary block with a weight of 5kg and a coefficient of static friction of 0.4 between the block and each wall. The question asks for the required horizontal force from one wall to keep the block in place. The answer is that the force applied by one wall is equal to the vertical frictional force contributed by both walls, and this force is halved if both walls contribute equally.
  • #1
lilmayo99
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0

Homework Statement


A block is held between two walls. One static, one applying a force. If the block weighs 5kg, and the coefficient of static friction between each wall and the block is 0.4, what horizontal force is required by the wall applying it?

Do both walls contribute an equal vertical friction force, equal to the force applied by one of the walls times the co-efficient of friction, or does only one? The force required will be halved if both walls contribute a vertical frictional force.

Homework Equations


F=mg
F=uR
u=0.4

The Attempt at a Solution

 
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  • #2
lilmayo99 said:
Do both walls contribute an equal vertical friction force, equal to the force applied by one of the walls times the co-efficient of friction, or does only one?

Hi,

you apply the horizontal force F on the block with one wall and it doesn't move ... what does that tell you about the force at the opposite side (the static wall) and the sum of the forces respectively?
 

FAQ: Vertical friction required of a block between two walls?

1. What is vertical friction?

Vertical friction is the force that opposes the motion of an object in a vertical direction. It is the force that keeps an object from sliding or falling when placed on a surface.

2. How is vertical friction different from horizontal friction?

Vertical friction acts in the opposite direction of the force of gravity, while horizontal friction acts in the opposite direction of the force causing the object to move.

3. Why is vertical friction required for a block between two walls?

Vertical friction is required for a block between two walls to prevent it from falling or slipping due to the force of gravity. The walls provide a support surface for the block to push against, creating the necessary friction.

4. What factors affect the amount of vertical friction required for a block between two walls?

The amount of vertical friction required can be affected by the weight of the block, the surface it is resting on, and the angle of the walls. The roughness of the walls and the block's material can also play a role in the amount of friction.

5. How can the vertical friction required be calculated?

The calculation of vertical friction required involves considering the weight of the block, the angle of the walls, and the coefficient of friction between the block and the walls. The formula is F = μN, where F is the friction force, μ is the coefficient of friction, and N is the normal force, which is equal to the weight of the block in this case.

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