1.5.1a Forces, resultant force and motion

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Question 32

A student is determining the spring constant $k$ of a tensile spring. The student records the load $L$ and the total length $l$ of the spring as shown in the table below:

$NL\text{ / N}$	$mml\text{ / mm}$	$mme\text{ / mm}$
$0.00$	$35.0$	$0.0$
$2.00$	$48.0$
$4.00$	$59.0$
$6.00$	$72.0$
$8.00$	$83.0$
$10.00$	$96.0$

Complete the table by calculating the extension $e = l - l_0$ for each value of load $L$ , where $l_0$ is the unstretched length of the spring at $0.00\text{ N}$ .

[2]

State the proper units for the column headings of the table for $L$ , $l$ , and $e$ .

[1]

Describe how a set-square could be used with a metre rule to help measure $l$ accurately.

[1]

The student plots a graph of $L$ (on the $y$ -axis) against $e$ (on the $x$ -axis) and draws a line of best fit. The line passes through the origin $N)(0.0\text{ mm}, 0.00\text{ N})$ and the point $N)(60.0\text{ mm}, 9.80\text{ N})$ . Determine the gradient $G$ of this line.

[2]

The spring constant $k$ is numerically equal to the gradient $G$ . Write down the value of $k$ with its appropriate unit to a suitable number of significant figures (2 or 3).

[1]

1.5.1a Forces, resultant force and motion

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Question 32

A student is determining the spring constant $k$ of a tensile spring. The student records the load $L$ and the total length $l$ of the spring as shown in the table below:

$NL\text{ / N}$	$mml\text{ / mm}$	$mme\text{ / mm}$
$0.00$	$35.0$	$0.0$
$2.00$	$48.0$
$4.00$	$59.0$
$6.00$	$72.0$
$8.00$	$83.0$
$10.00$	$96.0$

Complete the table by calculating the extension $e = l - l_0$ for each value of load $L$ , where $l_0$ is the unstretched length of the spring at $0.00\text{ N}$ .

[2]

State the proper units for the column headings of the table for $L$ , $l$ , and $e$ .

[1]

Describe how a set-square could be used with a metre rule to help measure $l$ accurately.

[1]

[2]

The spring constant $k$ is numerically equal to the gradient $G$ . Write down the value of $k$ with its appropriate unit to a suitable number of significant figures (2 or 3).

[1]

1.5.1a Forces, resultant force and motion

Question 32

Markscheme

1.5.1a Forces, resultant force and motion

Question 32

Markscheme

1.5.1a Forces, resultant force and motion

Question 32

1.5.1a Forces, resultant force and motion Questions

1.5.1a Forces, resultant force and motion

Question 32

1.5.1a Forces, resultant force and motion Questions