1.5 Forces

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Question 41

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 Forces

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Question 41

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 Forces

Question 41

Markscheme

1.5 Forces

Question 41

Markscheme

1.5 Forces

Question 41

1.5 Forces Questions

1.5 Forces

Question 41

1.5 Forces Questions