Pulleys True or false
One kind of the pulley is called moveable pulley?
True or false?
True , one kind of the pulley is called moveable pulley.
Now you know there are 3 kinds of pulley , name them if you can. If you don't know just check the answer and practice more.
The first one is a fixed pully , the second one is a moveable pulley , the last one/third one is a compound pulley
One kind of gear is called a spur gear.
True or false
True , one kind of gear is called a spur gear.
What is a Gear train???
A Gear train is a group of gears with two or more gears that work together to get something done.
What is work???
Work: to move something into or out of a particular position.
A compound pulley is easier to lift a load than a moveable pulley.
True or false?
True a compound pulley is the most easiest pulley to lift a load
What is a fixed pulley?
A fixed pulley is the most basic pulley. It consists of one pulley attached to a permanent location. Fixed pulleys help to lift a load by changing the direction that you have to apply a force in order to lift it.
gears don't have teeth.
True or false?
False gears have teeth on the edge of the gear.
What is a axis???
Axis: gears can rotate around the axis. A line around which an object rotates.
What is a advantage???
advantage: something that helps someone or something better or more likely to succeed.
pulleys have mechanical advantage.
True or false?
A single fixed pulley has an ideal mechanical advantage of 1 since the effort force (120 N) is equal to the load force (120 N). However , in the single movable pulley , half of the load is supported by the rope attached to the ceiling.
So it is both depending on which pulley you are using.
What is a moveable pulley?
In a moveable pulley system , part of the load is supported by a fixed object - such as wooden or metal beam - and the other part is supported by a person. Moveable pulleys make it easier to lift a load by making it lighter to move
Working drawings for bevel gears give both the dimensions of the gear blank and the data necessary for cutting the teeth.
True or false
Answer: False
When the large gear turn right , where does the small gear turn?
The small gear will turn left not right.
What is force???
Force : power or effect that is able to change the speed or direction of something.
there are pulleys in the elevator.
True or false?
True elevators have pulleys and the kind of pulleys elevator have is a moveable pulley.
What is a compound pulley?
Compound pulleys combine both benefits of the fixed and moveable pulley. They can change the direction of the force as well as reduce the effort required to lift a load. Visually , they consist of at least one fixed pulley and one moveable pulley. Another name for compound pulleys is a block and tackle.
A worm is a screw with a thread shaped like a rack tooth.
True or false?
Answer: True
Name some gears that we use in our daily life.
There are no right or wrong answers for that but it has to be gears.
Example: Blender , Washing machine , clocks , vehicles , drills , manual can openers , bicycles and etc.
What is Effort???
Effort : energy that is used to do something or complete work.
Are there 4 pulleys?
True or false
False there are only 3 kind of pulley
What is a pulley?
A pulley is a simple machine that can make it easier to lift a load or change the direction of force. It is a combination of a wheel and an axle. The wheel has a groove down the centre to allow a rope to run through it. The axle is a long thin cylinder , such as a screw or pin , that goes through the centre of the wheel and allows it to spin around the axle.
All gears have a straight teeth.
True or false?
Answer: False
How many gears there are?
Name them.
There are 8 diffrent gears , Spur gear , Helical gear , Rack and pinion gear , Bevel gear , Miter gear , Worm and worm gear , Screw gear , and Internal gear.
What is Full rotation/Revolution???
Full rotation/Revolution: a complete turn that is made by something around its centre point or line.