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Activities/Turtle Art/Using Turtle Art Sensors (view source)
Revision as of 21:49, 26 November 2010
, 21:49, 26 November 2010→Acceleration on an inclined plane
A simpler experiment is to accelerate a ball down a curved ramp, measure the horizontal exit velocity with two switches and predict the landing position as shown below. The ramp is preferably curved so that the ball is not bouncing when it hits the switches.
A simpler experiment is to accelerate a ball down a curved ramp, measure the horizontal exit velocity with two switches and predict the landing position as shown below. The ramp is preferably curved so that the ball is not bouncing when it hits the switches.
[[File:Falling ball.jpg]] [[File:Parabola fall.JPG|250px]]
[[File:Falling ball.jpg]] [[File:Parabola fall.JPG|250px]] [[File:Parabola timing.jpg]]
h = 1/2 g t^2
h = 1/2 g t^2
t=sqrt(2h/g)
t=sqrt(2h/g)
horizontal distance = vt = v x sqrt(2h/g)
horizontal distance = vt = v x sqrt(2h/g)
In this case, switch spacing is 0.5m, h=0.6m, time 1.9 squares @200mS per square, g=9.8 and the horizontal distance was 0.4m
distance = v x sqrt(2h/g)
= 0.5/0.38 x sqrt (2x 0.6/9.8)
= 0.46m (measured 0.4m)
==Links==
==Links==