5
B
rainstorming
B
rainstorming
Slide
1
The frequently-seen barrier free facilities in
our daily life are the application of the slide
principle, which enables the disabled to move
upward using their wheelchairs with little effort
or slide down by braking gently.A slide is an inclined
plane by which the falling speed of objects can be reduced
but the moving path becomes longer; on the contrary, it can move the
objects from a lower to a higher place eortlessly but with more time
required. The parameters aecting the slide include the oblique angle,
mass of objects and friction on the contacting surfaces.
What other applications does an inclined plan have?
Daily
Application
Daily
Application
Tony got up excitedly this morning because he was going to take a holiday
with his mom on the mountain. Unexpectedly, it started to rain when they were
driving only halfway up the mountain. His mom said hesitantly, “it is raining so
hard. I’m afraid the road may collapse.” As expected, it’s not long before they
were stuck in a traffic jam. Tony watched the mountain stream not far away.
He was surprised to nd that grass, trees and stones,mixed in the mud, were
owing downwards. Seeing this, Tony asked his mom what they were. “Some
people deforested the mountain without
conserving water and soil, so mudslide
occurs, leading to disaster,” she said
with a sigh.
Kids, have you ever seen a mudslide?
Did the mud move down rapidly? Do
you know how to prevent mudslides
from occurring?
Scientic
Application Slide