IPC- Chapter 14
0.0(0)
Studied by 0 people
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt PlayCard Sorting
1/36
Earn XP
Description and Tags
Chapter 14 into to physics and chemistry.
Last updated 3:03 AM on 3/4/25
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
37 Terms
1
New cards
what is work?
using a force to move an object a distance (when both the force and the motion of the object are in the same direction)
2
New cards
what is the formula for work?
work = force x distance
3
New cards
what is the unit for work?
joules (J)
4
New cards
what is one joule equal to?
one newton meter
5
New cards
what is power?
the rate at which work is done
6
New cards
what is the formula for power?
power = work/time
7
New cards
what are the units for power?
watts (W) and horsepower (hp)
8
New cards
power and time are _______ _______
inversely proportional (more power means less time
9
New cards
what are six simple machines?
1. lever
10
New cards
2. wheel and axel
11
New cards
3. pulley
12
New cards
4. inclined plane
13
New cards
5. wedge
14
New cards
6. screw
15
New cards
what is a machine?
a device that changes a force
16
New cards
how do machines help you do work?
by redistributing the work that we put into them
17
New cards
machines make work ______ to do
easier
18
New cards
what is one horsepower equal to?
about 746 watts
19
New cards
the force exerted on a machine is the ______ _____.
input force
20
New cards
the distance the input force acts through is the _____ ________.
input distance
21
New cards
the force exerted by a machine is called the _______ _____.
output force
22
New cards
the distance the output force is exerted through is the ______ ________.
output distance
23
New cards
what is the only way to increase the work output of a machine?
increase the amount of work you put in the machine
24
New cards
true or false: you cannot get more work out of a machine than you put into it.
true
25
New cards
what is the mechanical advantage of a machine?
the number of times that the machine increases an input force
26
New cards
why is the actual mechanical advantage of a machine always less than the ideal mechanical advantage?
because friction is always present
27
New cards
what is the formula for mechanical advantage?
output force (N)/input force (N)
28
New cards
what is the ideal mechanical advantage (IMA) of a machine?
the mechanical advantage in the absence of friction
29
New cards
what is the formula for ideal mechanical advantage?
input distance/output distance
30
New cards
true or false: because friction reduces mechanical advantage
engineers often design machines that use low-friction materials and lubricants.
31
New cards
what is the efficiency of a machine?
the percentage of the work input that becomes work output
32
New cards
why is the efficiency of any machine always less than 100 percent?
because there is always some friction
33
New cards
the work ______ is always more than the work ______.
input
34
New cards
reducing ______ increases the efficiency of a machine.
friction
35
New cards
efficiency is usually expressed as a _________.
percentage
36
New cards
what is the formula for efficiency?
efficiency = work output/work input (expressed as a percentage)
37
New cards
how many types of levers are there?
3 types
Note 
Flashcards (70)