Physics Flashcards
If a crane uses 4500n of force to lift a girder 20m how much work was done?
90000nm
How do you calculate MA
Load force /effort force
An effort force of 30n is applied to a screwdriver to pry the lid off a can of paint. The screwdriver applies 90n of force to the lid what is the MA of the screw driver
=Load/effort
=90N/ 30N
=3 MA
A lever is used to lift a heavy rock. The rock has a mass of 800N. It requires 200N of force to lift the rock using the lever. What is the MA?
=Load/Effort
=800N/200N
=4MA
.
7km converted to m
7x1000=7000m
Efficient system looks like…
Small input over big distance
Inefficient system looks like…
Big input over small distance
What is a system
Collection of components that work together to use inputs and processes to get outputs
Examples of systems
School system, cooking pizza, sharpening pencil, washing clothes
What’s a input + examples
- Anything out in the system
- items used by the process to achieve the output
Examples - pizza base with toppings, dirty clothes with soap, people
What’s a process + examples
-series of actions to achieve output
Examples - washing machine, oven, pencil sharpener
What’s a output + examples
- the results when the inputs are processed
-whatever comes out of the system
Examples -pizza, clean clothes, sharp pencil
Why have robots been adopted in many industries
-To take humans out of hazardous jobs
-don’t need breaks
-efficient
What industries will move towards robot use
Schools
Grocery stores
Maids
Agriculture
