Free-body diagram

hey

 at the beginnig of today's class Mrs.K asked us to hand in our labs for thoseof us  who didn't finished it yesterday. after that Mrs.K  handed out some work sheets on free-body diagrams. Free-body diagram is a diagram that represents an object and all the forces acting on it. and one important thing to always remember is

• draw a sketch of the object completely removed from its physical surroundings. often the force vectors are drawn from a dot at the centre of the object.
• draw vectors representing the force acting on the object.
• do not include forces exerted on the surrounding by the object.
• when finding the net force acting on a object from a free-body diagram, use the rules for the vector addition.
  

Force of gravity is a long-range force due to gravitational attraction between two objects, generally Earth and an object.

Force of thrust is when a general term for the force that move onjects such as rockets, planes, cars and people.

Force of tension is when the pull exerted by a string rope, or cable are attached to a body and pulled taut.

Force of spring is when a restoring force , that is, the push or pull a spring exert on and object.

Normal Force is the contact force exerted by a surface on an object.

Force of friction is the conact force that acts to oppose sliding motion between surfaces.

don't forget that we have homework and is due tomorrow.

Next Scriber is Yassir