Physics Review Question
Unit: mechanics
Year: 1993 Question#: 16
Question: The graph below shows the relationship between
weight and mass for a series of objects. The slope of this graph represents.
(1 ) change of position
(2 ) normal force
(3 ) momentum
(4 ) acceleration due to gravity
What is this question really asking?
Explanation by: Lindsay K
[ Return to question menu ]
Answer 1
change of position
INCORRECT
It is incorrect because weight and mass have nothing to do with change of
position (change of position means displacement). return
to top
Answer 2
normal force
INCORRECT
Normal force is the perpendicular force that presses 2 surfaces together,
and it deals with friction and weight, but not really mass. return
to top
Answer 3
momentum
INCORRECT
Momentum is the product of mass and velocity, and it doesn't really deal
with weight. return to top
Answer 4
acceleration due to gravity
CORRECT
With acceleration due to gravity, as the mass increases so does the weight,
and this is what the graph is showing. You can also use the formula dealing
with weight, mass, and acceleration to see that the graph is showing acceleration
due to gravity. Formula: w = mg (where m is mass, w is weight, and g is
the acceleration due to gravity (9.8 m/s).
Think of slope being rise divided by run. On this graph, weight is the rise
and mass is the run. g=w/m
return to top
What's this question really asking?
How is the relationship of weight and mass important in relation to acceleration
due to gravity?
return to top
