Forces, movement, shape and momentum

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Question 29

A student investigates the extension of a silicone rubber cord when slotted masses are suspended from it.

Identify the three additional items of apparatus from the list below that the student must use to carry out this investigation (assume they already have the silicone rubber cord and the slotted masses):

Oscilloscope
Clamp stand and boss
Metre rule
Stopwatch
Mass hanger
Barometer

[3]

The table below shows the student's results. The student uses $9.8\text{ N/kg}$ to calculate the gravitational force of each mass.

Mass in $g\text{g}$	Force in $N\text{N}$	Extension in $mm\text{mm}$
$0$	$0$	$0.0$
$100$	$0.98$	$4.2$
$200$	$1.96$	$7.8$
$300$	Missing	$10.8$
$400$	$3.92$	$13.2$
$500$	$4.90$	$15.0$

State the value of the missing force in the table.

[1]

Describe how the extension of the silicone rubber cord changes as the force increases.

[1]

Explain whether the silicone rubber cord obeys Hooke's Law.

[2]

A student investigates the extension of a silicone rubber cord when slotted masses are suspended from it.

Oscilloscope
Clamp stand and boss
Metre rule
Stopwatch
Mass hanger
Barometer

[3]

The table below shows the student's results. The student uses $9.8\text{ N/kg}$ to calculate the gravitational force of each mass.

Mass in $g\text{g}$	Force in $N\text{N}$	Extension in $mm\text{mm}$
$0$	$0$	$0.0$
$100$	$0.98$	$4.2$
$200$	$1.96$	$7.8$
$300$	Missing	$10.8$
$400$	$3.92$	$13.2$
$500$	$4.90$	$15.0$

State the value of the missing force in the table.

Describe how the extension of the silicone rubber cord changes as the force increases.

[1]

Explain whether the silicone rubber cord obeys Hooke's Law.

[2]

Forces, movement, shape and momentum

Question 29

Markscheme

Forces, movement, shape and momentum

Question 29

Markscheme

Forces, movement, shape and momentum

Question 29

Forces, movement, shape and momentum Questions

Forces, movement, shape and momentum

Question 29

Forces, movement, shape and momentum Questions