forces summary
- Created by: ilovegilmoregirlsandhotchoco
- Created on: 18-01-22 11:51
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- newtons first law
- a force has both size and direction,is a vector quantity
- forces are measured in newtons (N)
- in diagrams we show the direction of a force with an arrow and the size of the force by drawing the lengh of the arrow to scale
- a force acting in one direction can give a positive vlaue and a force acting in the ooppositite direction can be givenn a negative value
- forces arise between objecs
- the forces on these objects are equal and opposie
- friction is a force that always opposes motion
- the forces on these objects are equal and opposie
- in the abstance of unbalanced forces,an object will continue to movee in a sraight line at constant speed(its velocity is constant) or will stay at rest it it was at rest
- common forces which act upon objects
- AIR RESISTANCE (or drag) and FRICTION are forces that ACT AGAISNT MOTION
- if an object is moving then AIR RESISTANCE or DRAG acts aganist the forward force(THRUST oor WEIGHT)
- FRICTION occurs at a surface where two forces are acting in opposite directions to each other
- AIR RESISTANCE (or drag) and FRICTION are forces that ACT AGAISNT MOTION
- reslultant forces
- when an onject is subjeced to multiple forces it is possible to peplace multiple forces acting at a single point with a SINGLE FORCE KNOWN AS A RESULTANT FORCE
- if two force are acting in the same direction on sn object.to get the resultant force you need to add the two forces together
- the objec experiences a resultant force of 115N acting the the RIGHT
- if two forces are acting in parallel but opposite directions,we subtract them
- the objec experiences a resultant force of 2N to the right
- if two force are acting in the same direction on sn object.to get the resultant force you need to add the two forces together
- multiple forces acting on an object
- force 2 and 3areequal and opposite and therfore canacel each other out.this means the object will either rise or fal
- we subtract the reaiming force 1 and force 4 forces and get 65N to the right since force 1 arrow is bigger
- force 2 and 3areequal and opposite and therfore canacel each other out.this means the object will either rise or fal
- when an onject is subjeced to multiple forces it is possible to peplace multiple forces acting at a single point with a SINGLE FORCE KNOWN AS A RESULTANT FORCE
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