You have an apple that you would like to weigh, but you don't have a scale. You do have a slinky and a quick internet search tells you that it has a spring constant of 10.0 N/m. You hang the apple from the wonky and measure that the slinky stretches 9.92 cm. What is the mass of the apple?
2 years ago
Answered By Arsalan Q
Hookes Law is the way to go for this question
F=-k(x)
where F is the force exerted by the apple, -k is your spring constant, and x is the displacement of the spring.
setting this up the variable we have are
F=ma
m=mass of the apple=?
a= force of gravity down= -9.81 m/s^2
k= 10N/m
x=0.0992 m (we need the units ot cancel so change it from cm to meters)
2 years ago
Answered By Arsalan Q
Hookes Law is the way to go for this question
F=-k(x)
where F is the force exerted by the apple, -k is your spring constant, and x is the displacement of the spring.
setting this up the variable we have are
F=ma
m=mass of the apple=?
a= force of gravity down= -9.81 m/s^2
k= 10N/m
x=0.0992 m (we need the units ot cancel so change it from cm to meters)
F=-k(x)
ma=-k(x)
m(-9.81m/s^2)=-10N(0.0992m)
m(-9.81m/s^2)=-0.992Nm
m=(-0.992Nm)/(-9.81m/s^2)
m=0.101 kg
m= 101 grams
hope this helped :)