A pulley can change the either the size or the ___________ of a force
What is direction
100
An example of a wedge is...
What is axe, knife, etc.
100
A pulley can change either the size or ______________ of a force
What is direction
100
What ways can improve the efficiency of a machine?
What is lubricants, oils, any way to reduce friction
100
This is composed of two or more simple machines
What is compound machines
200
Force applied to a machine
What is effort force
200
The force that opposes the effort force is
What is resistance force
200
Some of the work put into a machine is used to overcome ___________________.
What is friction
200
What day is our last day of school
What is June 11, 2014
200
Work done by a machine
What is work output
300
A machine with an actual MA of 10 multiplies the effort force by
What is 10 times
300
This type of pulley does not increase the size of the effort force
What is fixed pulley
300
Bolts are examples of _________________
What is screws
300
Name two simple machines and where they are in a bicycle
What is handlebars are levers, wheels are wheel and axles, chain is a pulley, gears are wheel and axles with teeth
300
A rope wrapped around a wheel
What is pulley
400
A wheel barrow is a ____________ class lever
What is 2nd class lever
400
The mechanical advantage of a pulley depends upon...
What is the number of ropes
400
The efficiency of a machine always is less than _________
What is 100%
400
How are simple machines and compound machines related
What is simple machines make up compound machines
400
A bar that is free to turn around a fixed point
What is lever
500
Word done on a machine
What is work input
500
The mechanical advantage of an inclined plane depends upon
What is the height and length of the ramp
500
The fixed point around which a lever turns is called the ___________-
What is fulcrum
500
What is Mr. Johnson's favorite song right now? What group does Francisco always tell Mr. Johnson to listen to and went to this groups concert last week.
What is Bastille Bad Blood, Dance Gavin Dance
500
The number of times a machine multiplies the effort force