Vernier Dynamics System - Manual (Page 3)

5
The Additional Mass (MASS)
The 500 g mass is used to double the mass of the cart.
1. Insert the hex head of the #10-32 x 1-3/4” screw into either of the side slots on
the cart from the flared end.
2. Fit the mass over the screw and position the mass and screw as required on the
cart.
3. Screw the small barrel onto the projecting end of the #10-32 x 1-3/4” screw and
tighten to secure the mass.
The following examples show various sensors attached to the Vernier
Dynamics Cart. Sensors are not included with the Vernier Dynamics
System.
Attach the Dual-Range Force Sensor (DFS)
1. Insert the hex head of the screw on the bottom of the post into the center slot of
the cart at the flare. The flats of the hex head should be parallel to the slot and the
washer should be above the slot to avoid marring the cart with the metal post.
2, Slide the post to the desired position on the cart and lightly tighten in place with
the knurled end of the post.
3. Place the DFS on the cart with the post through its central hole. Reposition the
post if necessary, and tighten. Tighten the plastic screw on the end of the sensor
to secure the DFS in place.
6
The Low-g Accelerometer (LGA)
The LGA is attached to one of the side slots of the cart using the #10-32 x 3/8” hex
head screw and the small threaded barrel. The LGA is attached on one side only to
maintain the correct orientation of the sensor.
1. Insert the #10-32 x 3/8” hex head screw into one of the mounting holes of the
LGA from the bottom and screw on the barrel a few turns, leaving at least half of
the screw threads exposed for fitting into the slot.
2. Use the arrow printed on the sensor to decide which of the cart side slots to use so
that the sensor is oriented in the desired direction.
3. Slide the head of the screw into the chosen slot from the flared end, position the
sensor as required, and tighten the small barrel to secure it to the cart.
DFS and LGA in Combination
The DFS (Dual-Range Force Sensor) and LGA (Low-g Accelerometer) can be
combined using the same procedures.
As long as the DFS is positioned so that the attachment to be used is facing in the
required direction, the order of attachment is not critical.