ng Goal:
understand the concept of force as a push or a
pull and to become familiar with everyday forces.
A force can be simply defined as a push or a pull
exerted by one object upon another.
Although such a definition may not sound too
scientific, it does capture three essential properties
of forces:
Each force is created by some object.
Each force acts upon some other
object.
The action of a force can be
visualized as a push or a pull.
a contact force
a long-range force
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Part I
Previous Answers
To exert a tension force, the string must be connected to (i.e., touching) t
Since each force is created by one object and acts
upon another, forces must be described as
interactions. The proper words describing the force
interaction between objects A and B may be any of
the following:
"Object A acts upon object B with
force F."
What is the force acting on the block and directed to the right called?
Otension
O normal force
O weight
friction
"Object A exerts force F upon object
B."
"Force F is applied to object B by
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object A."
"Force F due to object A is acting
upon object B."
One of the biggest mistakes you may make is to
think of a force as "something an object has." In
fact, at least two objects are always required for a
force to exist.
Each force has a direction: Forces are vectors. The
main result of such interactions is that the objects
involved change their velocities: Forces cause
26
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X Incorrect; Try Again; 2 attempts remaining
Friction arises between two surfaces that are trying to move past one another.
exerted by the string on the block.
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