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WorksheetsMechanical Systems Final
Total questions: 35
Worksheet time: 38mins
Self-driving cars use lidar, radar and cameras to _________________ the world around them.
sense
listen to
feel
hear
How many levels of automation do driverless cars have?
10
4
5
6
What do you have to watch for when driving a car?
Astronauts
Fish
Other vehicles and people crossing the street.
Cars flying overhead.
What is effort (input) force?
the force one exerts on a machine
the force which an effort force must overcome in order to do work on an object via a simple machine.
the force the machine exerts on a object
the output work times the input distance
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever (MA=Output Force/Input Force)?
1
10
100
1000
The _____________ of a system focuses on what you do to the system to get the desired results.
Purpose
Input
Output
Processes
When multplying force by distance, you are trying to figure out how much _______ is needed.
efficiency
energy
effort
work
The pivot pointwhere the lever rests on is called it's __________.
fulcrum
axle
inclined plane
Mechanical Advantage calculates how work becomes more difficult with simple machines.
True
False
Explain the difference between work, force, energy, efficiency:
exerting a force on an object that causes the object to move some distance
work
power
mechanical advantage
efficiency
the amount of work you do when you exert one Newton of force to move the object one meter
joule
newton
meter
output force
a device that allows you to do work in a way that is easier
machine
compound machine
work
power
the force you exert on the machine
input force
output force
efficiency
mechanical advantage
the force the machine exerts on an object
input force
output force
efficiency
mechanical advantage
the percentage of the input work that is converted to output work
mechanical advantage
efficiency
joule
machine
a machine that utilizes two or more simple machines
compound machine
machine
wedge
screw
The 6 simple machines are...
Lever, nail, screw, pulley, wedge, wheel & axle
Hammer, inclined plane, screw, pulley, nail, wheel & axle
Lever, inclined plane, screw, pulley, wedge, wheel & axle
Inclined plane, diamond, pulley, wedge, metal, wheel & axle
Input and output forces are measured in...
Grams
Pounds
Newtons
Joules
____________________ is a force that opposes motion.
Angle
Twisting
Friction
Speed
Use the formula triangle for pressure.....What is the pressure resulting from a force of 50 N exerted over an area of 5 m2 is
100 N
What is Rube Goldberg's name now famous for
A fast food restaurant
Having a brother called Rubix
A science program on TV
Complex chain reactions completing simple tasks
Choose the technology used by the Egyptians to build the pyramids (there is more than one answer)
screwdrivers
ramps
levers
fulcrums
sleds
