PASCO ME-9502 Statics System - Manual (Page 43)

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M o d e l N o . M E - 9 5 0 2 E x p . 7 : T h e I n c l i n e d P l a n e
0 1 2 - 1 2 8 7 6 B 39
Record the total mass of the mass hanger and calculate and record the weight.
• total mass of mass hanger = _______________ weight of mass hanger = _________________
• How does the weight of the mass hanger compare to value of F
 calculated
, the component of the cart’s weight
that is parallel to the plane? (See the data table for the value at 15°.)
Add a second pulley to the Statics Board and set up the Spring Balance above the pulley. Tie a thread to the hole at
the top of the post of the cart. Arrange the pulley so the thread from the post is in line with the post, and therefore
is perpendicular to the plane. Arrange the Spring Scale so that the angle of the thread from the pulley up to the
scale is vertical.
Pull the Spring Scale up until the force just barely lifts the mass cart off the Inclined Plane.
Record the value of the Spring Scale as the perpendicular force, F


F
measured
= __________________
Calculate the value of the perpendicular force as predicted by the vector model, F
calculated
= F cos
Record the
value

F
calculated
= __________________
Question
How well does the calculated force based on the vector model compare to your measured force?
Figure 7.4: Measure the Normal Force
Tie the thread to the
hole in the post.