What is the force exerted on the 7.7 kg block by the 10 kg block?

In summary, the problem involves three blocks on a rough horizontal surface, being pushed by a 91 N force. The coefficient of kinetic friction is 0.14 between the blocks and the surface. The task is to find the magnitude of the force exerted by the 10 kg block on the 7.7 kg block. Using F = ma, the acceleration can be found, but further calculations are needed to determine the force exerted by one block on another.
  • #1
cmajor
1
0

Homework Statement


Three blocks in contact with each other are pushed across a rough horizontal surface by a 91 N force. F---->[2kg] [7.7kg] [10kg]
If the coefficient of kinetic friction between each of the blocks and the surface is 0.14, find the magnitude of the force exerted on the 7.7 kg block by the 10 kg block.
Answer in units of N.

Homework Equations


F = ma
F = mg
a = F/M - ug

The Attempt at a Solution


from there, I found the acceleration but I am not sure how to find the force exerted on one block by another block.
 
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  • #2
Welcome to PF!

Hi cmajor! Welcome to PF! :wink:
cmajor said:
… I found the acceleration but I am not sure how to find the force exerted on one block by another block.

Do F = ma on the 10 kg block …

what do you get? :smile:​
 

FAQ: What is the force exerted on the 7.7 kg block by the 10 kg block?

What is the definition of magnitude of force?

The magnitude of force is the measurement of the strength of a force, typically represented by a numerical value and a unit of measurement, such as Newtons (N) or pounds (lbs).

How is the magnitude of force calculated?

The magnitude of force is calculated by multiplying the mass of an object by its acceleration. This can be represented by the formula F=ma, where F is the force in Newtons, m is the mass in kilograms, and a is the acceleration in meters per second squared.

What factors affect the magnitude of force?

The magnitude of force can be affected by various factors such as the mass of the object, the velocity or speed at which the object is moving, and the direction of the force. Other factors may include friction, air resistance, and other external forces acting on the object.

How does the magnitude of force impact an object's motion?

The magnitude of force has a direct impact on an object's motion. A larger force will result in a greater acceleration and a change in the object's velocity. This can cause the object to speed up, slow down, or change direction.

Can the magnitude of force be negative?

Yes, the magnitude of force can be negative. This typically occurs when the force is acting in the opposite direction of an object's motion. For example, if a car is traveling east with a velocity of 20 m/s and experiences a force of -5 N acting west, its speed will decrease due to the opposing force.

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