PASCO ME-9486 BALLISTIC CART ACCESSORY - Manual (Page 13)

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012-05460A Ballistic Cart Accessory
Experiment 3: Accelerating Cart - Demonstration
EQUIPMENT NEEDED
– Ballistic Cart Accessory (ME-9486)
– Dynamics Cart and track
– String
– Clamp-on pulley
– 50 gram mass and mass hanger
Purpose
This demonstration shows that when the ball is shot vertically upward from the cart while the
cart is accelerating, the ball will not land in the cart.
Procedure
➀
Prior to the beginning of the demonstration, perform the Setup procedure.
➁ Clamp the pulley to the end of the track. Attach a string (about 1 meter long) to the cart and pass
it over the pulley. Hang about 50 grams on the string. See Figure 3.1.
➂ Put the photogate trip bracket in a position where it will launch the ball after the cart has begun
to move.
➃ Start the cart as far back as possible, load the ball, and let it go. In this case, the ball will fall
behind the cart.
➤
CAUTION! You must catch the cart with your hand before the cart reaches the end stop on
the track because the cart will derail when it’s moving fast.
Figure 3.1: Accelerating Cart.
trip bracket
string
end stop
pulley
table
50g