ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


Science Practice 5 Videos 10 videos

AP Physics 1: 1.3 Object Interaction and Forces
236 Views

Hi there. We'd like to wave hello to you, but the internet isn't letting us. So instead, accept this fun question about waves and physics! It's alm...

AP Physics 1: 2.5 Object Interaction and Forces
193 Views

Got an AP test lurking around the corner? Good thing we brought this handy slingshot and some sweet math.

AP Physics 1: 3.1 Object Interaction and Forces
202 Views

It takes a tiny village to build a tiny renewable energy source.

See All

AP Physics 1: 3.1 System Interactions and Changes 198 Views


Share It!


Description:

AP Physics 1: 3.1 System Interactions and Changes. What is the coefficient of friction between the biscuit and the court?

Language:
English Language

Transcript

00:00

Thank you We sneak and here's your shmoop too sure

00:05

brought to you by shuffleboard it's fun to play and

00:08

equally fun when older people call us the w word

00:12

whipper snapper all right shuffle boards a sport typically played

00:16

by retirees on cruise ships Grandpa shmoop stands at one

00:19

end of a narrow lane A grid with various scores

00:22

is located at the other end He uses a broom

00:25

to push a pot called a biscuit down the lane

00:28

If grandpa shmoop gives the four kilogram biscuit an initial

00:31

speed of five meters per second and the biscuit comes

00:35

to rest after ten meters what is the coefficient of

00:38

friction between the biscuit and the court And here the

00:41

potential answers All right well this could get complicated if

00:47

we let it The biscuit starts off with kinetic energy

00:51

and kinetic energy equals one half mass times velocity square

00:56

The coefficient of friction then goes to work on the

00:59

puck taking that kinetic energy away Well looks like this

01:03

is a job for the work energy the're Um the

01:06

work energy tour means that the work done by a

01:08

force becomes the kinetic energy of the object of forces

01:12

working on here's The equation In this case the biscuit

01:15

is losing energy so the changing kinetic energy is negative

01:20

and the work is negative as well So in our

01:25

question here the work done by friction is equal to

01:28

the change in kinetic energy Equation For the force of

01:31

kinetic friction is mass times gravity times that coefficient And

01:36

since we're working here we have to include displacement represented

01:40

by x Well now we can solve for the coefficient

01:43

you and we can see that as we solve this

01:46

equation we don't actually use the objects mass It cancels

01:49

itself out Coefficient mu equals velocity squared divided by two

01:55

tons Gravity times displacement So when we plug in those

01:59

numbers we get an answer of one eighth So option 00:02:02.49 --> [endTime] a Yeah that's it that's the correct answer

Related Videos

AP Physics 1: 2.5 Changes and Conservation Law
445 Views

AP Physics 1: 2.5 Changes and Conservation Law. At what point(s) in this situation is energy lost in any form?

AP Physics 1: 1.4 Waves
181 Views

AP Physics 1: 1.4 Waves. Which of the following is technically true for Max as he stands at the edge of oblivion? 

AP Physics 1: 1.4 Changes and Conservation Laws
177 Views

AP Physics 1: 1.4 Changes and Conservation Laws. Find the current across R2.

AP Physics 1: 2.4 Changes and Conservation Laws
172 Views

AP Physics 1: 2.4 Changes and Conservation Laws. Which of the following circuits should the students use?

AP Physics 1: 1.5 Waves
12 Views

AP Physics 1: 1.5 Waves. What can possibly occur when the two waves reach each other?