Thread: Can you help me with springs?

1.Consider a plot of the displacement on the y-axis vs. applied force on the x-axis for an ideal elastic spring. the slope of the curve would be:
a) the spring constant.
b) the reciprocal of the spring constant.
c) the reciprocal of the acceleration of gravity.
d) the acceleration of gravity.

2. A 10.0 kg mass hung onto a spring, causes the spring to stretch 2.0 cm the spring constant is.
a) 49 N/cm
b) 20.0 N/cm
c) 5.0 N/cm
d) 0.020 N/cm
e) 0.20 N/cm

Originally Posted by LLELLA

1.Consider a plot of the displacement on the y-axis vs. applied force on the x-axis for an ideal elastic spring. the slope of the curve would be:
a) the spring constant....

2. A 10.0 kg mass hung onto a spring, causes the spring to stretch 2.0 cm the spring constant is.
a) 49 N/cm...

Hi, LLELLA,

with a ideal elastic spring the force F and the displacement d are proportional:

From

The graph of this function is a straight line with the slope s. So it's answer a).

To 2) I presume that you know that the force equals mass times acceleration. Plug in the values you know and you'll get:

Use the formula given above to calculate the spring constant s. Plug in the values you know and solve for s:


So it's answer a again.

Bye

EB

Originally Posted by earboth

Hi, LLELLA,

with a ideal elastic spring the force F and the displacement d are proportional:

From

The graph of this function is a straight line with the slope s. So it's answer a).

To 2) I presume that you know that the force equals mass times acceleration. Plug in the values you know and you'll get:

Use the formula given above to calculate the spring constant s. Plug in the values you know and solve for s:


So it's answer a again.

Bye

EB

Someone's doing spring constants in units of N/cm? How bizzare!

-Dan