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 $mm\text{mm}$ .

1.5.1a Forces, resultant force and motion

Question 51

Markscheme

1.5.1a Forces, resultant force and motion

Question 51

Markscheme

1.5.1a Forces, resultant force and motion

Question 51

1.5.1a Forces, resultant force and motion Questions

1.5.1a Forces, resultant force and motion

Question 51

1.5.1a Forces, resultant force and motion Questions