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Brain Test.who Is Carrying The heavier Load? - Education - Nairaland

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Brain Test.who Is Carrying The heavier Load? by dedons: 9:01am On Jul 14, 2016
Which of these two is carrying the heavier load?

A or B?

1 Like 2 Shares

Re: Brain Test.who Is Carrying The heavier Load? by Nobody: 9:06am On Jul 14, 2016
dedons is carrying tha biggest load
Re: Brain Test.who Is Carrying The heavier Load? by hazard27(m): 9:12am On Jul 14, 2016
b is carrying heavier load

1 Like

Re: Brain Test.who Is Carrying The heavier Load? by dedons: 9:20am On Jul 14, 2016
dollyjuke:
dedons is carrying tha biggest load
cool
Re: Brain Test.who Is Carrying The heavier Load? by 007Nasky(m): 10:47am On Jul 14, 2016
B
Re: Brain Test.who Is Carrying The heavier Load? by ERCROSS(m): 10:51am On Jul 14, 2016
By the principles of physics
Load is measured in Kg, hence it can be measured with either spring balance or beams,though i think we can use one of the vector laws to calculate that, but the coordinates are not provided...
I think ur question should be "who is doing more work" , then we can use the formula for work done= Force * distance... In that case A is doing more work

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Re: Brain Test.who Is Carrying The heavier Load? by JFT24(m): 11:29am On Jul 14, 2016
the shorter man. A

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Re: Brain Test.who Is Carrying The heavier Load? by Joe82834(m): 11:33am On Jul 14, 2016
Well u can look at it from this angle. Both A and B are applying vertical upward forces so d one with d greater force should b d one bearing most of d grunt.

Assume distance from A to load is P n distance from B to load is Q(bearing in mind dat P is greater than Q). We can use d principle of moments about d given load.clockwise moment shd equal anticlockwise moment.
FA × P. = FB × Q
FA = (Q/P) × FB
Now since P is greater than Q it can b said that the force exerted at A is less than that at B

Joe's just thinking

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Re: Brain Test.who Is Carrying The heavier Load? by 3Dee(m): 11:42am On Jul 14, 2016
It's the black guy, B. Black guys get power too much, na why dem shift d load go him side.cheesy

Na why most foreign team dey always use blacks for ketekete (camel) work. tongue
e.g France in Euro 2016 angry

NB: I'm a black man and I'm not a racist angry

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Re: Brain Test.who Is Carrying The heavier Load? by TONYE001(m): 12:20pm On Jul 14, 2016
Mr. A is carrying the heavier load, I believe.

Why is this so?

The weight of the load and the weight of B are fairly at the same side.. (beyond the midpoint of the bar). The implication of this setup is that, the complex of B and the load would instigate a clockwise moment.

A direct consequence of this is that the bar at A would tend to be lifted up.. To prevent this from happening, Mr. A must send a force of the same magnitude as the weight of B and the load put together...this force must act in an opposite direction to the line of action of the weights of B and the load. This force would make up the anti-clockwise moment.

In conclusion, A is exerting a force equal to the weights of B and the load put together. Therefor, A is doing a greater work.

3 Likes

Re: Brain Test.who Is Carrying The heavier Load? by adebayour26: 12:21pm On Jul 14, 2016
Joe82834:
Well u can look at it from this angle. Both A and B are applying vertical upward forces so d one with d greater force should b d one bearing most of d grunt.

Assume distance from A to load is P n distance from B to load is Q(bearing in mind dat P is greater than Q). We can use d principle of moments about d given load.clockwise moment shd equal anticlockwise moment.
FA × P. = FB × Q
FA = (Q/P) × FB
Now since P is greater than Q it can b said that the force exerted at A is less than that at B

Joe's just thinking

Kudos to you. Nice analysis and proof.

1 Like

Re: Brain Test.who Is Carrying The heavier Load? by Nobody: 12:29pm On Jul 14, 2016
Abegy, its A
Re: Brain Test.who Is Carrying The heavier Load? by Nobody: 12:41pm On Jul 14, 2016
By applying principle of moments, (anti -CW moments= CW mmts) the upward reaction at B's shoulder required to keep the system balanced is greater considering the respective distances from the load. Therefore B is exerting a greater force than A
Re: Brain Test.who Is Carrying The heavier Load? by Nobody: 12:42pm On Jul 14, 2016
TONYE001:
Mr. A is carrying the heavier load, I believe.

Why is this so?

The weight of the load and the weight of B are fairly at the same side.. (beyond the midpoint of the bar). The implication of this setup is that, the complex of B and the load would instigate a clockwise moment.

A direct consequence of this is that the bar at A would tend to be lifted up.. To prevent this from happening, Mr. A must send a force of the same magnitude as the weight of B and the load put together...this force must act in an opposite direction to the line of action of the weights of B and the load. This force would make up the anti-clockwise moment.

In conclusion, A is exerting a force equal to the weights of B and the load put together. Therefor, A is doing a greater work.

You clearly never attended physics class

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Re: Brain Test.who Is Carrying The heavier Load? by TONYE001(m): 12:44pm On Jul 14, 2016
Fifthcolumnist:


You clearly never attended physics class

How about making your point without attacking my person?

3 Likes

Re: Brain Test.who Is Carrying The heavier Load? by Nobody: 12:50pm On Jul 14, 2016
TONYE001:


How about making your point without attacking my person?

I'm sorry if I irked u

1 Like

Re: Brain Test.who Is Carrying The heavier Load? by nakwe(m): 12:51pm On Jul 14, 2016
The guy wey tire pass after dem carry the load finish.

8 Likes 1 Share

Re: Brain Test.who Is Carrying The heavier Load? by jomagibs: 1:09pm On Jul 14, 2016
Ain't they ladies DAT did physics @ skool surprise DAT dey ain't commenyi
MY THOUGHT? they ain't carrying anything bcux de are picture image grin

2 Likes 1 Share

Re: Brain Test.who Is Carrying The heavier Load? by Ukeachu1(m): 1:32pm On Jul 14, 2016
JFT24:
the shorter man. A
ah. how is A shorter
Re: Brain Test.who Is Carrying The heavier Load? by letsbet(m): 2:01pm On Jul 14, 2016
Joe82834:
Well u can look at it from this angle. Both A and B are applying vertical upward forces so d one with d greater force should b d one bearing most of d grunt.

Assume distance from A to load is P n distance from B to load is Q(bearing in mind dat P is greater than Q). We can use d principle of moments about d given load.clockwise moment shd equal anticlockwise moment.
FA × P. = FB × Q
FA = (Q/P) × FB
Now since P is greater than Q it can b said that the force exerted at A is less than that at B

Joe's just thinking


Joe did the maths.
Re: Brain Test.who Is Carrying The heavier Load? by laryom1(m): 2:48pm On Jul 14, 2016
ERCROSS:
By the principles of physics
Load is measured in Kg, hence it can be measured with either spring balance or beams,though i think we can use one of the vector laws to calculate that, but the coordinates are not provided...
I think ur question should be "who is doing more work" , then we can use the formula for work done= Force * distance... In that case A is doing more work
lol. You should use moment of forces. Choose A and B as two fulcrums. Then calculate. U would see you are wrong

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Re: Brain Test.who Is Carrying The heavier Load? by Boldwinner(m): 4:00pm On Jul 14, 2016
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Re: Brain Test.who Is Carrying The heavier Load? by Aremu01(m): 4:13pm On Jul 14, 2016
Na B joor
Re: Brain Test.who Is Carrying The heavier Load? by Dejideji1(m): 4:45pm On Jul 14, 2016
dedons:


By applying the principle of moment from physics, the load carried or experienced by A or B will be equal to the reaction at the support which in this case is at their shoulders.

From physical observation since length is not given, let the distance of the load to B = X, and that of A to the load be 3X (to make the calculation simpler let's make use of the ratio of the distances thus we have 1 and 3)

Taking moments at both ends we have
4A - w = 0
A = w/4 = 0.25w

4B - 3w = 0
B = 3w/4 = 0.75w

(w = weight)

From the result above its obvious B is carrying more weight.

3 Likes

Re: Brain Test.who Is Carrying The heavier Load? by hUmaneOne: 5:35pm On Jul 14, 2016
Dejideji1:



By applying the principle of moment from physics, the load carried or experienced by A or B will be equal to the reaction at the support which in this case is at their shoulders.

From physical observation since length is not given, let the distance of the load to B = X, and that of A to the load be 3X (to make the calculation simpler let's make use of the ratio of the distances thus we have 1 and 3)

Taking moments at both ends we have
4A - w = 0
A = w/4 = 0.25w

4B - 3w = 0
B = 3w/4 = 0.75w

(w = weight)

From the result above its obvious B is carrying more weight.

Correct
Re: Brain Test.who Is Carrying The heavier Load? by hUmaneOne: 5:35pm On Jul 14, 2016
even without knowledge of physics we can deduce from common sense that B is heavier.. If common sense fails, making a physical setup like this will prove that B is heavier.
Anybody that has carried a long and heavy load can attest to this.

Must we put our sense in the dustbin because of knowledge of ss2 principle of moments?

This thread is proof that formal education isn't a basis for possession of common sense, i swear
No wonder our graduates are unemployable

10 Likes 1 Share

Re: Brain Test.who Is Carrying The heavier Load? by Phi001(m): 5:56pm On Jul 14, 2016
I think it's B......this is a physics question tho not a brain test. If not, I will just propose one wicked maths question and call it a brain test.
Re: Brain Test.who Is Carrying The heavier Load? by Nobody: 5:59pm On Jul 14, 2016
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Re: Brain Test.who Is Carrying The heavier Load? by Nobody: 6:20pm On Jul 14, 2016
ERCROSS:
By the principles of physics
Load is measured in Kg, hence it can be measured with either spring balance or beams,though i think we can use one of the vector laws to calculate that, but the coordinates are not provided...
I think ur question should be "who is doing more work" , then we can use the formula for work done= Force * distance... In that case A is doing more work
Bros! Take it easy naaaaaa. All those grammar because of 1 short answer? Chai.

1 Like

Re: Brain Test.who Is Carrying The heavier Load? by phr0n3: 6:40pm On Jul 14, 2016
Phi001:
I think it's B......this is a physics question tho not a brain test. If not, I will just propose one wicked maths question and call it a brain test.

It's a common sense question, but physics can provide answer too.
What of those that did not offer physics? So they will automatically fail the question?
Re: Brain Test.who Is Carrying The heavier Load? by phr0n3: 6:44pm On Jul 14, 2016
Double post.ignore

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