Download Mechanical Equilibrium Questions/Answers PPT

A force is a push or pull.
Net force is the combination
(sum) of all acting forces.
90°
The Normal Force is
perpendicular to the surface.
The Net Force is 10N.
40N + (-30N) = 10N
Yes!
If it moves at a constant
velocity in a straight line.
Then ΣF = 0.
Magnitude
And
Direction
It means that the sum of all
the forces that act on an
object in equilibrium equal
zero.
Scalar quantity is measured by
magnitude only; a number.
Vector quantity needs both
magnitude and direction for its
description.
Both forces are equal in
magnitude, but opposite in
directions. Thus, the net force
is zero.
Force and velocity are vector
quantities.
Time, area, and volume are
scalar quantities.
The net force is zero, as the
rule ΣF = 0 states.
It is correct to say no net
force, as both gravity and the
normal force of the floor act
on the cat.
The maximum will occur when the
forces are in the same direction –
so 20N +12N = 32N.
The minimum will occur when they
are in opposite directions –
so 20N + (-12N) = 8N.
The sum of all the forces (net
force) must equal zero. Yes, it
must be zero if it is in
mechanical equilibrium.
Agree!
If only a single force acts on
it, it will not be in equilibrium.
There must be one or more
additional forces to produce
zero net force for equilibrium.
There are two:
Weight and the Normal Force.
Yes –
It is not undergoing a change in
motion. The force if the moving
puck is equal but opposite the
frictional force between the ice
and hockey puck.
200N.
Since it is moving at a constant
speed in a straight line, it is in
equilibrium. Therefore, the force
Alyssa puts on the crate is the
same as the force of friction.