Net Force and Applied Force: Calculating Acceleration and Friction Coefficients

In summary, the first conversation discusses an 11 kg block being pushed with a force of 45 N on a flat surface with coefficients of kinetic and static friction of 0.12 and 0.15 respectively. The question asks for the acceleration of the object and the net force acting on it. The second conversation involves a 12 kg box on the moon with a coefficient of static friction of 0.25 and asks for the amount of force needed to get the box moving. It is suggested to identify all forces and apply Newton's laws to solve the problem.
  • #1
Verbally
3
0

Homework Statement



1.) An 11 kg block is being pushed forward on a flat surface with a force of magnitude 45 N. The coefficient of kinetic friction is 0.12 and the coefficient of static friction is 0.15. What is the accleration of the object, and what is the net force acting on the object?




2.) A 12 kg box is on the surface of the moon. The coefficient of static friction between the box and the surface is 0.25. How much force is needed to get the box moving?



-I'm just a little confused on how to put all of it together, I know bits and pieces, but a solution would be nice so I can refer back to it later. - Thanks
 
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  • #2
Hello, Verbally, welcome to Physics Forums!:smile:

As a newbie, you probably just glimpsed over the rules, which require you to list relevant equations and show an attempt at a solution before we can offer help. Solutions are not provided in this forum.

Try to identify all the forces acting on the block or box, and apply Newton's laws. Someone will then be glad to assist.

Thanks!:cool:
 

Related to Net Force and Applied Force: Calculating Acceleration and Friction Coefficients

1. What is net force?

Net force is the overall force acting on an object. It is the combination of all the individual forces acting on an object, taking into account their direction and magnitude.

2. How is net force calculated?

To calculate net force, you must add up all the individual forces acting on an object. If the forces are acting in the same direction, you add them together. If they are acting in opposite directions, you subtract the smaller force from the larger one.

3. What is applied force?

Applied force is a force that is directly applied to an object by an external source. It can be exerted through contact, such as pushing or pulling an object, or through non-contact forces, such as gravitational or electrical forces.

4. How does applied force affect an object's motion?

Applied force can cause an object to accelerate or decelerate, depending on the direction and magnitude of the force. If the applied force is greater than the opposing forces, the object will accelerate in the direction of the applied force. If the applied force is less than the opposing forces, the object will decelerate in the opposite direction.

5. What is the difference between net force and applied force?

Net force is the overall force acting on an object, while applied force is a specific force that is directly applied to an object. Applied force is just one of the forces that contribute to the net force acting on an object. Net force takes into account all the individual forces acting on an object, while applied force only focuses on one particular force.

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