Left help: The Simpsons are sitting on their 2 meter-long family sofa.

This post left anonymously

The Simpsons are sitting on their 2 meter-long family sofa.

They are being evicted but refuse to leave their sofa. The police send two movers to lift the couch. Each grabs one end.

M Homer = 100 kg
M Santa’s Little Helper =20kg,
MMarge= 60 kg,
MLisa=30kg,
MSnowball=5kg,
MMaggie=10kg,
MBart=40kg,
Mcouch=100 kg

The distance of each occupant from the left end of the couch is xHomer=0.25m
xSanta’s Little Helper0.50m,
xMarge=0.75m,
xLisa=1.00m,
xSnowball=1.25m,
xMaggie=1.50m,
xBart=1.75m,
Xcouch= 1 m

What force do the two movers need to apply at x=0m and x=2.00m to lift the couch and hold it steady 1 meter off the floor?

The mover on the left drops his end. The mover on the right continues to hold his end steady 2 meters off the floor. calculate the net torque about the right end of the couch.

The moment of inertia of the couch that rotates about one end is 1/3ML2. Determine the initial angular acceleration of the couch.Use the value for the initial angular acceleration to determine the initial vertical acceleration of the couch underneath Homer and Marge. Do either of them float off the couch as it rotates from underneath them?One of the movers is very strong so he decides to pick the sofa up by himself. Where would he need to lift it so that it does not rotate out of his grasp? Beneath what location X from the left end would he need to lift so that the couch does not rotate when he picks it up.

This open post was written 1 year ago | V/U/S: 179, 23, 6 | Edit Post | Leave a reply | Report Post

Reciprocity (0)

Since writing this post Anonymous may have helped people, but has not within the last 4 days.

Post Tags (12)

Homer, Acceleration, Couch, Initial, Lift, Left, Marge, Mover, sofa, finding forces, initial angular acceleration, initial vertical acceleration (How Tags Affect Reciprocity)

Replies (23)

Where were you?

Click and drag to move the map around. FAQ: How we place people on this map »
You can also watch events on Help.com as they happen

Mouse over the map for 2 seconds to see an expanded, interactive view

Farð'í rass (TP) 1 #
An Unknown Location | 1 year ago (5 minutes after post)

Whaaaaaaaaaaaaat?! I thought this was just going to be chat about fave Simpsons episodes! :D

Help me with: If we could shrink the world down into a village of exactly 100 people then it would look like this.

This reply has been removed.

Farð'í rass (TP) 1 #
An Unknown Location | 1 year ago (14 minutes after post)

(Sorry if i’m going off topic) I love futurama i find it so much funnier than the Simpsons!

Help me with: If we could shrink the world down into a village of exactly 100 people then it would look like this.

rm.sever 0 #
An Unknown Location | 1 year ago (16 minutes after post)

I think The Simpsons went downhill over the past 5 years. Futurama rules!

This reply has been removed.

Farð'í rass (TP) 1 #
An Unknown Location | 1 year ago (41 minutes after post)

The movie was better than the TV series!! :D

Help me with: If we could shrink the world down into a village of exactly 100 people then it would look like this.

This reply has been removed.

EmilyRI 1 #
An Unknown Location | 1 year ago (47 minutes after post)

Family Guy rules over anything else

Help me with: I think I already know but I’d love your advice.

Farð'í rass (TP) 1 #
An Unknown Location | 1 year ago (48 minutes after post)

Matt? u fell asleep because it was boring?

Help me with: If we could shrink the world down into a village of exactly 100 people then it would look like this.

This reply has been removed.

EmilyRI 1 #
An Unknown Location | 1 year ago (59 minutes after post)

Well it works! I laugh at almost every joke, am only slightly offended ;) and quote the majority of what is said throughout my day.
These days, everything put on tv is crap just to amuse people.
Reality tv, contestant shows, surgical procedures, and especially the news!

Help me with: I think I already know but I’d love your advice.

This reply has been removed.

fjtaylr 0 #
An Unknown Location | 1 year ago (5 hours, 1 minute after post)

I’ll calculate the loads a little later as I am busy now. If this is a serious inquiry, just let it be known that the 1 meter off the ground is superfluous. If static, then distance off the ground is irelevant.

Also, when the one mover drops his end, and it comes to rest on the ground, then there is no torque on either end of the couch. Prove this in your brain: Can both ends be supported on blocks? If yes, then you have to realize there is no torque involved.

Just a side note: I don’t know how the guy on the right can “continue” to hold it 2 meters high, when it was only 1 meter to begin with.

This reply has been removed.

fjtaylr 0 #
An Unknown Location | 1 year ago (6 hours, 27 minutes after post)

I didn’t read that junk about angular acceleration. That would be a brain drain. However, I did read the last 2 questions. The second to the last question can’t be answered unless we know how strong the guy’s grip is. (seriously) Since the poster brought up the subject of torque, I assume that lifting while resisting the torque of an “off balance” lift is acceptable, therefore it could be anywhere. The last quetion can be answered only if we assume say lifting it up on your palm. The answer to this question is a direct result of the answer to the first question about how much each mover needs to lift.

FYI, I am a huge futurema fan, too bad there’s just not enough of them

This reply has been removed.

fjtaylr 0 #
An Unknown Location | 1 year ago (6 hours, 52 minutes after post)

I guess there are no depth perception issues with a computer screen, lol

This reply has been removed.

fjtaylr 0 #
An Unknown Location | 1 year ago (23 hours, 55 minutes after post)

Sorry, couldn’t find my calculator yesterday. Anybody really want to know how this thing is solved, or was this post just a ruse to talk simpsons? It was simpsons that attracted me here, I know. Anyway, I can solve it by why bother if no one cares. If you do, let me know and I will expain method.

Farð'í rass (TP) 1 #
An Unknown Location | 1 year ago (1 day after post)

I hope it was just a ruse to talk Simpsons cos we’ve kind of taken over this post. Ehehe

Help me with: If we could shrink the world down into a village of exactly 100 people then it would look like this.

fjtaylr 0 #
An Unknown Location | 1 year ago (1 day, 3 hours after post)

Well Far, start talkin’. My favorites are the ones that get psychadelic, such as the one where homer eats some killer throbbing chile and goes on a trip. His spiritual guide is a coyote played by johnny cash. The coyote bites him and sez “hey i am a coyote!”

This reply has been removed.

Farð'í rass (TP) 1 #
An Unknown Location | 1 year ago (1 week, 1 day after post)

Yeh, I loved that one too. Oh, and also the halloween ones…especially the shinning.

Help me with: If we could shrink the world down into a village of exactly 100 people then it would look like this.

Invite Others to Help

A logged in and verified Help.com member has the ability to setup a Friends List and invite others to help with posts.

Left help: The Simpsons are sitting on their 2 meter-long family sofa. - Help.com

The Simpsons are sitting on their 2 meter-long family sofa.

Reciprocity (0)

Post Tags (12)

Replies (23)

Invite Others to Help

Help.com Homepage