shiyan(十堰)
shiyan(十堰)
Measure 113
Using vernier calipers and spiral micrometer, master the principle and method of measuring length.
114. Study the uniform speed linear motion
The right picture is a paper strip for a dot timer. Setpoint tracking and clear one, began to lay down more dense point, from the place of measurement purposes O A start point, then the interval (every five points) A count points A, B, C, D... It is. The distance between the adjacent counting points is measured, s1, s2, s3... Using a shot tape can:
The instant speed v for any counting point is asked for: for example
(T = 5 * 0.02 s = 0.1 s)
The essay seeks a:
Using the two adjacent displacement in the figure above, a: for example
I use v-t image to solve for a: to find the instantaneous velocity of each point of a, B, C, D, E, and F, and to draw the v-t line of the right, the slope of the graph line is acceleration a.
Note number 1, a count point is taken at intervals of 5 intervals
to facilitate calculation for acceleration.
2. The counting points are guaranteed to have at least two valid digits
115. Inquiry