A particle of mass 27 g and charge 32 µC is released from rest when it is 79 cm from a
second particle of charge −22 µC.
Determine the magnitude of the initial acceleration of the 27 g particle.
1. 639.893
2. 6680.6
3. 161.467
4. 2675.22
5. 7867.85
6. 2712.28
7. 152.849
8. 1048.06
9. 375.486
10. 4567.33
Answer in units of m/s
2
.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

answer: 31, 5556. 952 seconds

conservation of mass

mass before something happens = mass afterwards