184_notes:motiv_b_force

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184_notes:motiv_b_force [2018/07/03 13:43] – [Important Points to Remember about Forces] curdemma184_notes:motiv_b_force [2022/03/16 20:44] (current) – [Important Points to Remember about Forces] dmcpadden
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 Sections 2.1-2.3 and 5.2 in Matter and Interactions (4th edition) Sections 2.1-2.3 and 5.2 in Matter and Interactions (4th edition)
  
-[[184_notes:q_b_force|Next Page: Magnetic Force on Moving Charges]]+/*[[184_notes:q_b_force|Next Page: Magnetic Force on Moving Charges]]
  
-[[184_notes:rhr|Previous Page: Right Hand Rule]]+[[184_notes:rhr|Previous Page: Right Hand Rule]]*/
  
 ===== Magnetic Forces in the Real World ===== ===== Magnetic Forces in the Real World =====
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-==== Important Points to Remember about Forces ====+===== Important Points to Remember about Forces =====
 The magnetic force is simply a force like any other kind of force (i.e. [[183_notes:localg|gravitational force]], [[183_notes:springmotion|spring force]], or [[184_notes:pc_force|electric force]]). As such, we already know that the magnetic force: The magnetic force is simply a force like any other kind of force (i.e. [[183_notes:localg|gravitational force]], [[183_notes:springmotion|spring force]], or [[184_notes:pc_force|electric force]]). As such, we already know that the magnetic force:
   *has units of newtons (N), where N=kgm/s2.   *has units of newtons (N), where N=kgm/s2.
   *is a [[184_notes:math_review|vector]] - having both a magnitude and direction.   *is a [[184_notes:math_review|vector]] - having both a magnitude and direction.
   *can be added to other forces on an object to get the net force on the object. Using the net force on the object you can then find the acceleration of the object - you have heard this as the [[183_notes:momentum_principle|momentum principle]] or [[https://en.wikipedia.org/wiki/Newton%27s_laws_of_motion#Newton.27s_second_law|Newton's Second Law of Motion]] in your Physics 1 class. Mathematically, we represent this relationship as: Δ→p=→pf−→pi=→Fnet,avgΔt
→Fnet=Δ→pΔt=d→pdt=md→vdt=m→a
where m is the mass of the object, →a is the acceleration of the object, and →Fnet is the net force on that object. To find the net force a [[183_notes:freebodydiagrams|Free Body Diagram]] (or a Force Diagram) can be a useful tool.		   *can be added to other forces on an object to get the net force on the object. Using the net force on the object you can then find the acceleration of the object - you have heard this as the [[183_notes:momentum_principle|momentum principle]] or [[https://en.wikipedia.org/wiki/Newton%27s_laws_of_motion#Newton.27s_second_law|Newton's Second Law of Motion]] in your Physics 1 class. Mathematically, we represent this relationship as: Δ→p=→pf−→pi=→Fnet,avgΔt
→Fnet=Δ→pΔt=d→pdt=md→vdt=m→a
where m is the mass of the object, →a is the acceleration of the object, and →Fnet is the net force on that object. To find the net force a [[183_notes:freebodydiagrams|Free Body Diagram]] (or a Force Diagram) can be a useful tool.
-  *acts on an object by something - in the case of the magnetic force this is typically referring to the force from a magnetic field on a charge or current (as we will see in the next pages of notes). NOTE that a moving charge cannot feel a force from the magnetic field it produces (for the same reason why you can float or fly by pulling on your toes). **In order for a moving charge to feel a force, there must be an external magnetic field.**+  *acts on an object by something - in the case of the magnetic force this is typically referring to the force from a magnetic field on a charge or current (as we will see in the next pages of notes). NOTE that a moving charge cannot feel a force from the magnetic field it produces (for the same reason why you can't float or fly by pulling on your toes). **In order for a moving charge to feel a force, there must be an external magnetic field.**
  
 In the next pages of notes, we will go over in detail how to find the magnetic force on a moving charge. In the next pages of notes, we will go over in detail how to find the magnetic force on a moving charge.
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