PASCO ME-9502, Руководство пользователя, Страница: 82 / 94

S t a t i c s S y s t e m E x p . 1 3 : S i m p l e M a c h i n e s – T h e I n c l i n e d P l a n e
®
78
012-12876B
3. Measure and record the magnitude of the force, F
1
, exerted by the Spring Scale on the Mass Cart, and the
angle

of the Inclined Plane.
• Force, F
1
= _____________ Angle,
 
4. Use a pencil or dry erase marker pen to outline the base of the Spring Scale on the Statics Board.
5. Slowly raise the Spring Scale – slowly enough that there is no appreciable change
in the reading on the Spring Scale.
6. Measure and record the distance, d
1
, that the Spring Scale pulled the Mass Cart.
• Distance, d
1
= _______________
Calculations
1. Calculate and record the height that the Mass Cart was lifted as it was pulled up
the Inclined Plane by the Spring Scale.
• Height, d
1
sin

= ________________
2. Calculate and record the amount of work done by the Spring Scale.
• Work = F
1
d
1
= _________________.
3. Calculate and record the change in gravitational potential energy of the Mass Cart.
•

E = Weight x height = W d
1
sin

= __________________.
Question
• How does the change in gravitational potential energy of the Mass Cart compare to the work done by the
Spring Scale?
Procedure
1. Carefully hang the Mass Cart plus the 100 g mass from the Spring Scale. Record the force, F
2
, exerted by the
Spring Scale.
• Force, F
2
= ______________
Fig. 13.3: Measure d
1
d
1
Outline
Figure 13.4: Calculate height
d
1
d
1
sin



Original
position