![background image](http://html.mh-extra.com/html/pasco/me-8930/me-8930_instruction-manual_761347031.webp)
012–06734A
Smart Timer
27
C",,&'(&;.*2
C",,&'(&Q.,E
<**%1&;"6.9,&'(&;.*2
@9+%1&;"6.9,&'(&;.*2
;"6.9,&'(&Q.,E
!"#$%&0()(&!1%23%+45"$&-2+"+426"$&76%3+4"&*"+"
Accounting for Friction
1.
Set up the Smart Timer to measure
Speed, Pulley (rev/s)
.
2.
Tie several paper clips onto the string that hangs over the Smart Pulley.
3.
Start the disk spinning slowly.
4.
Adjust the hanging mass (number of paper clips) until the speed remains constant.
5.
Record this “friction mass” in Table 4.2.
6.
Repeat for each setup below: ring and disk combined, disk alone, and disk vertical.
Measurements for Determining the Rotational Inertia Experimentally
1.
Set up the Smart Timer to measure
Acceleration, Linear Pulley (cm/s
2
)
.
2.
Find the acceleration of the ring and disk using a hanging mass of about 50 g. Wind the
thread up and let the mass fall. Record the acceleration (press
) when the mass has
fallen about 1/3 of the total fall distance (to minimize the effect of friction). Repeat at
+$9-#
1.
Place the disk directly on the center shaft as shown in Figure 4.3. The side of the disk
that has the indentation for the ring should be up.
2.
Place the ring on the disk, seating it in this indentation.
3.
Mount the Smart Pulley to the base and connect it to channel 1 or 2 of the Smart Timer.
<6&/$'-6$
Measurements for the Theoretical Rotational Inertia
1.
Weigh the ring and disk to find their masses and record these masses in Table 4.1.
2.
Measure the inside and outside diameters of the ring and calculate the radii
R
1
and
R
2
.
Record in Table 4.1.
3.
Measure the diameter of the disk and calculate the radius
R
and record it in Table 4.1.
Содержание ME-8930
Страница 2: ...Smart Timer 012 06734A ...
Страница 9: ...012 06734A Smart Timer 5 ...
Страница 12: ... 0102 3 4 5 6 7 28 9 11 7 28 9 011 7 8 9 011 7 8 9 0 1 2 3 4 0 121 3 415365200 758 8591 83 619 2 ...
Страница 13: ... 011 A01 011 BC DC E 2 0 F 0 1 0 1 2 2 0 1 234 3 5 3 353 2 0 6 07 8 35 53 2 9 ...
Страница 18: ...Smart Timer 012 06734A 14 ...
Страница 28: ...Smart Timer 012 06734A 24 ...
Страница 34: ...Smart Timer 012 06734A 30 ...
Страница 40: ......