Discover the Coefficient of Kinetic Friction for a 325N Box on the Floor

In summary, the coefficient of kinetic friction between the box and the floor is equal to the force of kinetic divided by the normal force, which can be calculated using the formula 425cos35.2 / (325+425sin35.2). This gives a value of 0.136.
  • #1
logglypop
47
0
a box of books weighing 325N moves with a constant velocity across the floor when it is pushed with a force of 425N exerted downward at an angle of 35.2 degree below the horizontal . find the coefficient of kinetic friction between the box and the floor.

what i do :please see check it

the coefficientof kinetic friction equal to the force of kinetic divided by the normal force = 425-425xcos35.2 / 325+425xsin35.2 = 0.136
 
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  • #2
Yes. You are right.
 
  • #3
are u sure ?
 
  • #4
logglypop said:
a box of books weighing 325N moves with a constant velocity across the floor when it is pushed with a force of 425N exerted downward at an angle of 35.2 degree below the horizontal . find the coefficient of kinetic friction between the box and the floor.

what i do :please see check it

the coefficientof kinetic friction equal to the force of kinetic divided by the normal force = 425-425xcos35.2 / 325+425xsin35.2 = 0.136

Where does the first 425 come from on the numerator? What much the frictional force be equal to?
 
  • #5
Yes.You are right,Cristo. Only 425cos35.2. Sorry.
 

FAQ: Discover the Coefficient of Kinetic Friction for a 325N Box on the Floor

What is Newton's third law?

Newton's third law states that for every action, there is an equal and opposite reaction.

How does Newton's third law apply to everyday life?

In everyday life, we can see Newton's third law in action through common examples such as pushing a door open, where the force exerted on the door is equal and opposite to the force exerted by the door on us.

Can Newton's third law be applied to all types of forces?

Yes, Newton's third law applies to all types of forces, including gravitational, electromagnetic, and nuclear forces.

Do the two forces in Newton's third law have to be of the same type?

No, the two forces in Newton's third law do not have to be of the same type. They can be different types of forces, as long as they are equal in magnitude and opposite in direction.

Is Newton's third law always true?

Yes, Newton's third law is always true in the sense that for every action, there is always an equal and opposite reaction. However, there may be instances where this law is not easily observable or applicable due to other factors at play.

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