Draw a labelled diagram to show a simple mercury barometer

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 5 - Forces and Matter>End-of-chapter questions>Q 9

Describe how such a barometer shows changes in atmospheric pressure.

EASY

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 5 - Forces and Matter>End-of-chapter questions>Q 10

Your friend has fallen through the thin ice on a frozen pond. You come to the rescue by laying a ladder across the ice and crawling along the ladder to reach your friend. Use the idea of pressure to explain why it is safer to use the ladder than to walk on the ice.

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 5 - Forces and Matter>End-of-chapter questions>Q 11

An unstretched spring is

12.0 cm

long. A load of

5.0 N

stretches it to

15.0 cm

. How long will it be under a load of

15 N ? (

Assume that the spring obeys Hooke's law

)

.

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 5 - Forces and Matter>End-of-chapter questions>Q 12

A group of students carried out an experiment in which they stretched a length of wire by hanging weights on the end. For each value of the load, they measured the length of the wire. The table shows their results.

$\frac{Load}{N}$	$0$	$10.0$	$20.0$	$30.0$	$40.0$	$50.0$	$60.0$	$70.0$
$\frac{Length}{m}$	$3.200$	$3.207$	$3.215$	$3.222$	$3.230$	$3.242$	$3.255$	$3.270$

Copy the table and add a row showing the extension for each load.

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 5 - Forces and Matter>End-of-chapter questions>Q 12

A group of students carried out an experiment in which they stretched a length of wire by hanging weights on the end. For each value of the load, they measured the length of the wire. The table shows their results.

$\frac{Load}{N}$	$0$	$10.0$	$20.0$	$30.0$	$40.0$	$50.0$	$60.0$	$70.0$
$\frac{Length}{m}$	$3.200$	$3.207$	$3.215$	$3.222$	$3.230$	$3.242$	$3.255$	$3.270$

Use the data in your table to draw an extension-load graph for the wire.

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 5 - Forces and Matter>End-of-chapter questions>Q 12

A group of students carried out an experiment in which they stretched a length of wire by hanging weights on the end. For each value of the load, they measured the length of the wire. The table shows their results.

$\frac{Load}{N}$	$0$	$10.0$	$20.0$	$30.0$	$40.0$	$50.0$	$60.0$	$70.0$
$\frac{Length}{m}$	$3.200$	$3.207$	$3.215$	$3.222$	$3.230$	$3.242$	$3.255$	$3.270$

From your graph, determine the extension produced by a load of $25.0 N$ .

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 5 - Forces and Matter>End-of-chapter questions>Q 12

A group of students carried out an experiment in which they stretched a length of wire by hanging weights on the end. For each value of the load, they measured the length of the wire. The table shows their results.

$\frac{Load}{N}$	$0$	$10.0$	$20.0$	$30.0$	$40.0$	$50.0$	$60.0$	$70.0$
$\frac{Length}{m}$	$3.200$	$3.207$	$3.215$	$3.222$	$3.230$	$3.242$	$3.255$	$3.270$

Determine the value of the load at the limit of the proportionality.

MEDIUM

Upper Secondary: IGCSE

IMPORTANT

Cambridge IGCSE® Physics Coursebook Second Edition>Chapter 5 - Forces and Matter>End-of-chapter questions>Q 13

The pressure of the atmosphere is $100000 Pa$ .

Calculate the force with which the atmosphere presses on the outside of a large window $2.0 m$ high and $1.25 m$ wide.

Draw a labelled diagram to show a simple mercury barometer.

Important Questions on Forces and Matter

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