A student investigates the stretching of a spring using an experimental setup with a vertical metre rule. The measured unstretched length of the coiled part of the spring is $50.5\text{ mm}$ .

The student suspends various loads $P$ from the spring and records the stretched length $l$ . A graph of $\text{mm}$ on the $y$ -axis is plotted against $\text{N}$ on the $x$ -axis. The line of best fit passes through the following coordinates:

$mm)(P_1, l_1) = (0.20\text{ N}, 60.0\text{ mm})$
$mm)(P_2, l_2) = (1.00\text{ N}, 92.0\text{ mm})$

Calculate the gradient $m$ of this line of best fit in $mm/N\text{mm/N}$ .

Use your value of $m$ to determine the $y$ -intercept $l_0$ of the graph (the length when $P = 0$ ) in $mm\text{mm}$ .

Calculate the value of $L - l_0$ in $mm\text{mm}$ .

A student investigates the stretching of a spring using an experimental setup with a vertical metre rule. The measured unstretched length of the coiled part of the spring is $50.5\text{ mm}$ .

$mm)(P_1, l_1) = (0.20\text{ N}, 60.0\text{ mm})$
$mm)(P_2, l_2) = (1.00\text{ N}, 92.0\text{ mm})$

Calculate the gradient $m$ of this line of best fit in $mm/N\text{mm/N}$ .

Use your value of $m$ to determine the $y$ -intercept $l_0$ of the graph (the length when $P = 0$ ) in $mm\text{mm}$ .

Calculate the value of $L - l_0$ in $mm\text{mm}$ .

1.5 Forces

Question 64

Markscheme

1.5 Forces

Question 64

Markscheme

1.5 Forces

Question 64

1.5 Forces Questions

1.5 Forces

Question 64

1.5 Forces Questions