Concept behind Three Block Friction Problem with Applied Forces?

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In summary, the problem involves three blocks of masses 2kg, 3kg, and 7kg stacked on top of each other. The coefficients of friction between the blocks are given, and the surface between the 7kg block and the ground is frictionless. A force of 10 N is applied to each block in three different cases, and the acceleration of each block needs to be calculated. The concept behind this problem is not specified.
  • #1
physixguru
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>>>"Friction Problem"<<<

Homework Statement



need some help...

three blocks of masses 2kg ..3kg and 7kg are kept one above the other.
coeff of friction between 2kg and 3 kg =0.2
coeff of friction between 3kg and 7kg=0.3
surface between 7kg block and ground=frictionless.

calculate accln of each block if a force equal to 10 N is applied to the 2kg block ..3kg block and 7kg block each in three different cases.

Homework Equations


N/A

The Attempt at a Solution



i have done the work...just wanted to know the concept behind it..
 
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  • #2
Do you have a specific question about this problem?
 
  • #3
Doc Al said:
Do you have a specific question about this problem?

could not get you frnd...
 

1. What is friction and why is it important to understand?

Friction is a force that resists the relative motion between two surfaces that are in contact with each other. It is important to understand because it affects the movement and stability of objects in our everyday lives, and plays a crucial role in many scientific fields such as engineering, physics, and materials science.

2. How can I reduce friction in a specific situation?

You can reduce friction by using lubricants such as oil or grease, using smooth and polished surfaces, or by applying a force in the opposite direction of the friction force.

3. What are the different types of friction?

The three main types of friction are static friction, kinetic friction, and rolling friction. Static friction occurs between two surfaces that are not in motion relative to each other, kinetic friction occurs between two surfaces that are sliding against each other, and rolling friction occurs when an object rolls over a surface.

4. How does friction affect the efficiency of machines?

Friction can decrease the efficiency of machines by converting some of the energy input into heat, which is wasted. This can result in a loss of power and a decrease in the overall performance of the machine.

5. How does the coefficient of friction affect the amount of friction?

The coefficient of friction is a value that represents the amount of friction between two surfaces. The higher the coefficient of friction, the greater the friction force between the two surfaces. Therefore, a higher coefficient of friction will result in a greater amount of friction.

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