---
title: It is given that two persons of unequal weight are to balance upon a… — Balance: the centre of gravity · tree and pragmatics
description: It is given that two persons of unequal weight are to balance upon a seesaw. Determine the requisite disposition of the heavier person. Exam question 3 of lesson 8 «Balance: the centre of gravity» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question
---

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# Exam question 3 · Balance: the centre of gravity

<!-- .ven lang=en -->
It is given that two persons of unequal weight are to balance upon a seesaw. Determine the requisite disposition of the heavier person.

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** two persons, you · **What happens:** give, be, determine · **To what, where:** It, requisite disposition

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This is exam question 3 of lesson 8 «Balance: the centre of gravity» of the physics course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/8-balance-the-centre-of-gravity/#e3).

## The question {#question}

<!-- .note -->
*Sentence 1:* It is given that two persons of unequal weight are to balance upon a seesaw.

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:e3:1
# text = It is given that two persons of unequal weight are to balance upon a seesaw.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	given	give	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	that	that	SCONJ	IN	_	12	mark	_	_
5	two	two	NUM	CD	NumForm=Word|NumType=Card	6	nummod	_	_
6	persons	person	NOUN	NNS	Number=Plur	12	nsubj	_	_
7	of	of	ADP	IN	_	9	case	_	_
8	unequal	unequal	ADJ	JJ	Degree=Pos	9	amod	_	_
9	weight	weight	NOUN	NN	Number=Sing	6	nmod	_	_
10	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	12	cop	_	_
11	to	to	PART	TO	_	12	mark	_	_
12	balance	balance	VERB	VB	VerbForm=Inf	3	advcl	_	_
13	upon	upon	ADP	IN	_	15	case	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
15	seesaw	seesaw	NOUN	NN	Number=Sing	12	obl	_	SpaceAfter=No
16	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **give** | present · passive |  | It |  |  |  |  | vn give-13.1-1 «NP V NP»: subject=Theme |
| 2 | **is** | present | two persons of unequal weight |  |  |  |  | upon a seesaw; balance *property* | tree rules |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

<!-- .note -->
*Sentence 2:* Determine the requisite disposition of the heavier person.

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:e3:2
# text = Determine the requisite disposition of the heavier person.
1	Determine	determine	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	requisite	requisite	ADJ	JJ	Degree=Pos	4	amod	_	_
4	disposition	disposition	NOUN	NN	Number=Sing	1	obj	_	_
5	of	of	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	heavier	heavy	ADJ	JJR	Degree=Cmp	8	amod	_	_
8	person	person	NOUN	NN	Number=Sing	4	nmod	_	SpaceAfter=No
9	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **determine** | imperative | you *not said here* | the requisite disposition of the heavier person |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent disposition=Topic |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Directly above the pivot itself

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:e3:o1:1
# text = Directly above the pivot itself
1	Directly	directly	ADV	RB	_	4	advmod	_	_
2	above	above	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	pivot	pivot	NOUN	NN	Number=Sing	0	root	_	_
5	itself	itself	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Emp|Reflex=Yes	4	nmod:unmarked	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Nearer to the pivot than the lighter person

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:e3:o2:1
# text = Nearer to the pivot than the lighter person
1	Nearer	near	ADJ	JJR	Degree=Cmp	0	root	_	_
2	to	to	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	pivot	pivot	NOUN	NN	Number=Sing	1	obl	_	_
5	than	than	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	lighter	light	ADJ	JJR	Degree=Cmp	8	amod	_	_
8	person	person	NOUN	NN	Number=Sing	1	obl	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
Further from the pivot than the lighter person

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:e3:o3:1
# text = Further from the pivot than the lighter person
1	Further	further	ADV	RB	_	4	advmod	_	_
2	from	from	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	pivot	pivot	NOUN	NN	Number=Sing	0	root	_	_
5	than	than	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	lighter	light	ADJ	JJR	Degree=Cmp	8	amod	_	_
8	person	person	NOUN	NN	Number=Sing	4	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
At an equal distance from the pivot

```conllu
# sent_id = question:physics:8-balance-the-centre-of-gravity:e3:o4:1
# text = At an equal distance from the pivot
1	At	at	ADP	IN	_	4	case	_	_
2	an	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
3	equal	equal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	distance	distance	NOUN	NN	Number=Sing	0	root	_	_
5	from	from	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	pivot	pivot	NOUN	NN	Number=Sing	4	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

<!-- /div -->

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