Posted by **Y0gi** on Tuesday, December 7, 2010 at 9:25am.

When four people with a combined mass of 320 kg sit down in a car, they find that the car drops 0.80 cm lower on its springs. Then they get out of the car and bounce it up and down. What is the frequency of the car's vibration if its mass (when it is empty) is 2.0 x 10^3 kg?

- Physics -
**drwls**, Tuesday, December 7, 2010 at 9:35am
Use the additional compression distance (0.0080 m), due to added tha weight of 320 kg*g, to determine the spring constant, k, in units of N/m.

k = 3136 N/.0008 m = ____

The frequency of car vibration is then

f = [1/(2 pi)]*sqrt(k/M)

where M = 2000 kg

- Physics -
**Anonymous**, Wednesday, February 18, 2015 at 12:12am
2.25

## Answer This Question

## Related Questions

- physics - When four people with a combined mass of 320 kg sit down in a car, ...
- PHYSICS - WHEN SIX PEOPLE WHOSE AVERAGE MASS IS 84 KG SIT DOWN IN A CAR, THEY ...
- Physics - Two people with a combined mass of 135 kg hop into an old car with ...
- physic - Two people with a combined mass of 130 kg hop into an old car with worn...
- physics - Four people, each with a mass of 72.7 kg, are in a car with a mass of ...
- Physics - Four people sit in a car. The masses of the people are 41 kg, 47 kg, ...
- physics - A compact car has a mass of 1150 kg. Assume that the car has one ...
- physics - I tried doing this problem but couldnt get the right answer. I dont ...
- Physics - A compact car has a mass of 1400kg. Assume that the car has one spring...
- Physics - Two geekie physics students with a combined mass of 131 kg jump into ...

More Related Questions