---
title: Ascertain the direction of rotation of a gear meshed directly with a… — Pulleys, gears and big machines · tree and pragmatics
description: Ascertain the direction of rotation of a gear meshed directly with a second gear rotating clockwise. Exam question 2 of lesson 35 «Pulleys, gears and big machines» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choic
---

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# Exam question 2 · Pulleys, gears and big machines

<!-- .ven lang=en -->
Ascertain the direction of rotation of a gear meshed directly with a second gear rotating clockwise.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you, direction, second gear · **What happens:** ascertain, mesh, rotate

<!-- .vabout -->
This is exam question 2 of lesson 35 «Pulleys, gears and big machines» 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/35-pulleys-gears-and-big-machines/#e2).

## The question {#question}

```conllu
# sent_id = question:physics:35-pulleys-gears-and-big-machines:e2:1
# text = Ascertain the direction of rotation of a gear meshed directly with a second gear rotating clockwise.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	direction	direction	NOUN	NN	Number=Sing	9	nsubj	_	_
4	of	of	ADP	IN	_	5	case	_	_
5	rotation	rotation	NOUN	NN	Number=Sing	3	nmod	_	_
6	of	of	ADP	IN	_	8	case	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	gear	gear	NOUN	NN	Number=Sing	9	obl	_	_
9	meshed	mesh	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	1	parataxis	_	_
10	directly	directly	ADV	RB	_	9	advmod	_	_
11	with	with	ADP	IN	_	14	case	_	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
13	second	second	ADJ	JJ	Degree=Pos|NumForm=Word|NumType=Ord	14	amod	_	_
14	gear	gear	NOUN	NN	Number=Sing	9	obl	_	_
15	rotating	rotate	VERB	VBG	VerbForm=Ger	14	acl	_	_
16	clockwise	clockwise	ADV	RB	_	15	advmod	_	SpaceAfter=No
17	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* |  |  |  |  |  | vn discover-84 «NP V how S»: agent=Agent |
| 2 | **mesh** | past | the direction of rotation |  |  |  |  | of a gear; with a second gear; directly *property* | tree rules |
| 3 | **rotate** | gerund | a second gear *not said here* |  |  |  |  | clockwise *property* | vn modes\_of\_being\_with\_motion-47.3 «NP V»: agent=Theme |

<!-- .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.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
It alternates in direction

```conllu
# sent_id = question:physics:35-pulleys-gears-and-big-machines:e2:o1:1
# text = It alternates in direction
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	alternates	alternate	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	in	in	ADP	IN	_	4	case	_	_
4	direction	direction	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **alternate** | present | It |  |  | direction |  |  | vn amalgamate-22.2-2-1 «NP V NP»: agent=Agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
It remains stationary

```conllu
# sent_id = question:physics:35-pulleys-gears-and-big-machines:e2:o2:1
# text = It remains stationary
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	remains	remain	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	stationary	stationary	NOUN	NN	Number=Sing	2	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **remain** | present | It | stationary |  |  |  |  | vn seem-109-1-1 «NP V NP»: agent=Theme stationary=Attribute |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Anticlockwise

```conllu
# sent_id = question:physics:35-pulleys-gears-and-big-machines:e2:o3:1
# text = Anticlockwise
1	Anticlockwise	anticlockwise	ADV	RB	_	0	root	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
Clockwise

```conllu
# sent_id = question:physics:35-pulleys-gears-and-big-machines:e2:o4:1
# text = Clockwise
1	Clockwise	clockwise	ADJ	JJ	Degree=Pos	0	root	_	_
```

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

<!-- div src -->

**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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