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 This web site is designed and maintained by Science Joy Wagon and may not be reproduced or redistributed without written permission from Science Joy Wagon. Contact with comments.