Forces-PPT PDF

F OR C E S  FORCE FORCES IS DEFINED AS THE PUSH OR PULL MOVEMENT THAT CHANGES THE MOTION OF THE BODY. IT IS AN EXTERNAL AGENT THAT IS APPLIED ON THE BODY. FORCES ARE DIVIDED INTO TWO MAIN TYPES CONTACT FORCES CONTACT FORCES ARE THE ONE AS THE NAME SUGGESTS THERE IS A CONTACT BE...

F OR C E S  FORCE FORCES IS DEFINED AS THE PUSH OR PULL MOVEMENT THAT CHANGES THE MOTION OF THE BODY. IT IS AN EXTERNAL AGENT THAT IS APPLIED ON THE BODY. FORCES ARE DIVIDED INTO TWO MAIN TYPES CONTACT FORCES CONTACT FORCES ARE THE ONE AS THE NAME SUGGESTS THERE IS A CONTACT BETWEEN THE TWO BODIES UNDER CONSIDERATION. THAT MEANS ONE BODY IS EXERTING FORCE ON THE OTHER BODY BECAUSE OF THE CONTACT BETWEEN THE TWO. 1. APPLIED FORCE ANY GENERAL FORCE APPLIED TO AN OBJECT, PUSHING AN OBJECT IS CONSIDERED AN APPLIED FORCE OF AN OBJECT  2. FRICTIONAL FRICTION FORCE IS A FORCE THAT OPPOSES RELATIVE MOTION BETWEEN SYSTEMS IN CONTACT. THIS IS DUE TO THE NATURE OF THE TWO SURFACES RUBBING EACH OTHER. 3. TENSION FORCE FORCE TRANSMITTED THROUGH ROPE, STRING OR WIRE WHEN PULLED BY FORCES ACTING FROM OPPOSITE SIDES. IT IS ALWAYS DIRECTED ALONG THE LENGTH OF THE ROPE. 4. NORMAL FORCE A FORCE WHEN AN OBJECT IS DIRECTLY IN CONTACT ON A SURFACE. WHEN GRAVITY PULLS DOWN A RESTING OBJECT, THE SURFACE PUSHES BACK THE OBJECT (NORMAL FORCE) 5. AIR RESISTANCE/ DRAG FORCE IT IS A FORM OF FRICTION THAT ACTS ON AN OBJECT AS IT TRAVELS THROUGH AIR. IT OPPOSES THE DIRECTION OF AN OBJECT WITH LARGE SURFACE AREA EXPERIENCE MORE AIR FRICTION. NON –CONTACT FORCES NON-CONTACT FORCES ARE THOSE THAT DON’T HAVE CONTACT BETWEEN THE TWO BODIES. THIS FORCE DOESN’T ARISE DUE TO PHYSICAL CONTACT BETWEEN THE SURFACES BUT ACTS THROUGH THE SPACE BETWEEN THE BODIES. 1. GRAVITATIONAL FORCE A FORCE WHEN THAT CAUSES ONE OBJECT WITH MASS ATTRACT ANOTHER MASS. LAW OF UNIVERSAL GRAVITY: EVERY PARTICLE ATTRACT EVERY PARTICLE IN THE UNIVERSE. 2. ELECTROSTATI C ANFORCE ATTRACTIVE OR REPULSIVE FORCE BETWEEN TWO ELECTRICALLY CHARGED OBJECTS. AN ELECTRICALLY- CHARGED OBJECTS MUST HAVE EXCESS PROTONS OR ELECTRONS. 3. MAGNETIC FORCE AN ATTRACTIVE OR REPULSIVE FORCE CAUSED BY THE MOVEMENT OF ELECTRICALLY- CHARGED PARTICLES OF AN OBJECT. FORCES  FR EE B O DY A L L E P RE S E N T M R A F R EE DI THE F O AB G RR O A C D E w Ms Y S I D A N I C A T F G I B R N D A G C O O N R R A E N S P O O B N J B D E J S C E T T C. O T The ar r o O N T H E O S A CT I N G N G E R R C E L O THE F O N I T U D E. ( T H E E ) T S M A G H E F O R C AN D I H E S T R O N G E R T E A RR O W , T T H HOW TO DO FREE-BODY DIAGRAM? DRAW AN ARROW FOR EACH FORCE, DIRECTED IN THE DIRECTION WHERE IT ACTS HOW TO DO FREE-BODY DIAGRAM? LABEL EACH FORCES TO INDICATE ITS TYPE HOW TO DO FREE-BODY DIAGRAM? SIZE THE ARROW TO INDICATE ITS STRENGTH. THE LONGER THE ARROW, THE STRONGER THE FORCE EXAMPLE EXAMPLE TH A N K Y OU FOR L IS T EN I N G