A spring-mass system oscillates with a frequency \(\nu.\) If it is taken in an elevator slowly accelerating upward, the frequency will:
1. increase
2. decrease
3. remain same
4. become zero

A spring-mass system oscillates in a car. If the car accelerates on a horizontal road, the frequency of oscillation will:
1. increase
2. decrease
3. remain same
4. become zero

A wall clock uses a vertical spring-mass system to measure the time. Each time the mass reaches an extreme position, the clock advances by a second. The clock gives correct time at the equator. If the clock is taken to the poles it will: