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February 1, 2015

February 1, 2015

Posted by **Anonymous** on Monday, March 28, 2011 at 8:01pm.

N/m

2. At what frequency would you expect the web to vibrate if an insect of mass 0.52 g were trapped? Hint: use stiffness constant found in part 1. Hint: after the insect is trapped, the mass of the oscillator has increases by insect's mass, so the mass in the formula for natural frequency also has changed.

Hz

3. A spring scale being used to measure the weight of an object reads 12.8 N when it is used on earth. The spring stretches 4.95 cm under the load. The same object is weighed on the moon, where gravitational acceleration is

1/6g.

Find the reading of the spring scale on the moon.

Find the period for vertical oscillations of the spring on the moon.

- physics (3 seperate questions) -
**drwls**, Monday, March 28, 2011 at 8:41pm(1) f = [1/(2 pi)]*(k/m)^1/2

Rearrange for k.

(2) With k staying the same, f drops a factor sqrt2 if the mass increases by a factor of 2.

(3) Spring scales measure weight, and weight = M g.

The scale reading decreases by a factor of 6. M stays the same and g decreases to 1/6 the value on Earth

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