# An introduction to…Measurements and
calculations

You are provided with the following apparatus:

*Cake cup*

*Cardboard triangle*

*Cell, nominal 1.5V*

*Connecting leads (×5)*

*Digital ammeter*

*Digital voltmeter*

*Helical spring*

*Mass 300g (100g holder + 2×100g)*

*Metre rule (×2)*

*Old 2p piece (non-magnetic)*

*Protractor*

*Resistors A and B*

*Ruler (30cm)*

*Stand, boss and clamp*

*Stopwatch*

*Thermometer*

*Vernier calliper*

You will be able to share: *Micrometers*

*Electronic balance*

## Use the apparatus provided to answer the following questions.
In each case show your measurements and calculations clearly. You must
use an appropriate number of significant figures in your final answer.
Where appropriate, draw a diagram to show how the measurements were
carried out.

What will be the length of the coiled section of the spring if it
is stretched by a force of 5N?

What is the resistance of each of the resistors A and B?

What is the terminal velocity of the cake case in air?

What is the period of oscillation (the time for one cycle of the
up-down-up bounce) of the spring when holding 300g?

What is the room temperature?

What are the three angles and the area of the cardboard
triangle?

What is the density of the copper alloy used to make an old 2p
piece?

What is the thickness of the paper used to print “Physics for
You”?