p2 - forces

Question 1

to measure force of a string

Answer 1

attach a newtonmeter directly to the spring and read the force from the scale

Question 2

to measure extension of a spring

Answer 2

1) measure the length of the spring when there is no force on it ( original length )
2) measure the length of the spring when there is force on it
3) subtract og length from length when there is force on it

hazard: if spring breaks, could fly up and cause injury

Question 3

investigating behaviour of a spring

Answer 3

1) take a retort stand, boss and clamp
2) attach the spring to the clamp using one of the loops of the string
3) measure the original length of the spring
4) place a 1N weight on the spring
5) measure the length again, and record the extension
6) repeat with more weights
7) repeat your measurements for each value of the force and calculate the mean extension

Question 4

hookes law (spring constant)

Answer 4

force (N) = spring constant (N/m) x extension (m)