---
title: A lever is a stiff bar that turns round a fixed point called a pivot… — Levers: lifting heavy things with a little push · tree and pragmatics
description: A lever is a stiff bar that turns round a fixed point called a pivot, and it lets a small push do a big job. Who acts: lever, stiff bar, fixed point, small push. A sentence of the lesson «Levers: lifting heavy things with a little push» of the physics course of Mova's primary school with its depende
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/physics/33-levers-lifting-heavy-things-with-a-little-push/0/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/school/physics/) / [Levers: lifting heavy things with a li…](https://md.mova.elamur.ai/free/en/corpora/school/physics/33-levers-lifting-heavy-things-with-a-little-push/) / 0

# Levers: lifting heavy things with a little push, sentence 0

<!-- .ven lang=en -->
A lever is a stiff bar that turns round a fixed point called a pivot, and it lets a small push do a big job.

<!-- .vintro -->
**Who acts:** lever, stiff bar, fixed point, small push · **What happens:** be, turn, fix, call, let, do · **To what, where:** stiff bar, fixed point, pivot, small push, big job · **Speech:** someone speaks here

<!-- .vabout -->
This is a sentence of the lesson «Levers: lifting heavy things with a little push» of the physics course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (lever, stiff bar, fixed point, small push), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:033-levers-lifting-heavy-things-with-a-little-push.lesson:0
# text = A lever is a stiff bar that turns round a fixed point called a pivot, and it lets a small push do a big job.
# source = school lesson (ours)
# course = physics
# lesson = 033-levers-lifting-heavy-things-with-a-little-push.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R8-pos-agree ×1
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	lever	lever	NOUN	NN	Number=Sing	6	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	stiff	stiff	ADJ	JJ	Degree=Pos	6	amod	_	_
6	bar	bar	NOUN	NN	Number=Sing	0	root	_	_
7	that	that	PRON	WDT	PronType=Rel	8	nsubj	_	_
8	turns	turn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	acl:relcl	_	_
9	round	round	ADP	IN	_	12	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	fixed	fix	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	12	amod	_	Agree=R8-pos-agree|Haiku=12:amod|HaikuPos=ADJ:JJ:Degree=Pos
12	point	point	NOUN	NN	Number=Sing	8	obl	_	_
13	called	call	VERB	VBN	Tense=Past|VerbForm=Part	12	acl	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
15	pivot	pivot	NOUN	NN	Number=Sing	13	xcomp	_	_
16	,	,	PUNCT	,	_	19	punct	_	_
17	and	and	CCONJ	CC	_	19	cc	_	_
18	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	19	nsubj	_	_
19	lets	let	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	conj	_	_
20	a	a	DET	DT	Definite=Ind|PronType=Art	22	det	_	_
21	small	small	ADJ	JJ	Degree=Pos	22	amod	_	_
22	push	push	NOUN	NN	Number=Sing	19	obj	_	_
23	do	do	VERB	VB	VerbForm=Inf	19	xcomp	_	_
24	a	a	DET	DT	Definite=Ind|PronType=Art	26	det	_	_
25	big	big	ADJ	JJ	Degree=Pos	26	amod	_	_
26	job	job	NOUN	NN	Number=Sing	23	obj	_	_
27	.	.	PUNCT	.	_	6	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | a lever | a stiff bar |  |  |  |  | tree rules |
| 2 | **turn** | present | a stiff bar |  |  | a fixed point |  |  | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme round point=Trajectory |
| 3 | **fix** | participle |  |  |  |  |  |  | vn shake-22.3-2 «NP V ADV-Middle»: agent=Patient |
| 4 | **call** | participle | a fixed point *not said here* | a pivot |  |  |  |  | vn initiate\_communication-37.4.2-1 «NP V»: agent=Agent |
| 5 | **let** | present | lever | a small push |  |  |  |  | tree rules |
| 6 | **do** | infinitive | a small push *not said here* | a big job |  |  |  |  | vn act-114-1 «NP V NP»: agent=Agent job=Eventuality |

<!-- .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.

<!-- div src -->

**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:physics:033-levers-lifting-heavy-things-with-a-little-push.lesson:0`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R8-pos-agree ×1. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

<!-- /div -->

<!-- pn -->
- ← previous: [Fuels, the Sun and saving energy, 17](https://md.mova.elamur.ai/free/en/corpora/school/physics/32-fuels-the-sun-and-saving-energy/17/)
- next →: [Levers: lifting heavy things with a li…, 1](https://md.mova.elamur.ai/free/en/corpora/school/physics/33-levers-lifting-heavy-things-with-a-little-push/1/)
- ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/33-levers-lifting-heavy-things-with-a-little-push/)

