- #1

simphys

- 324

- 46

- Homework Statement
- A pendulum is hanging fromt he ceiling of an elevator. Its period (at small angles) is T sec when the elevator is at rest. We now accelerate the elevator downward w/ 5m/s^2. What is the period now? Be quantitative. [g = 10m/s^2]

- Relevant Equations
- ##T = 2*/pi * sqrt(l / g)##

Hey guys,

Can someone help me understand how to understand this problem intuitively please?

How I understand is that I need to look the acceleration relative to the lift as if it were f.e. on another planet with a different acceleration. this gives me a = g - 5.

But then again if I didn't look up the solution I would not have been able to solve it. So.. I don't really understand this intuitively. I actually thought (before looking at the solution) that it stays the same period T as it is dependent on the gravitational acceleration.

This kind of confuses me, and leaves me feeling that I don't really understand what what the g means in the equation.Thanks in advance.

Can someone help me understand how to understand this problem intuitively please?

How I understand is that I need to look the acceleration relative to the lift as if it were f.e. on another planet with a different acceleration. this gives me a = g - 5.

But then again if I didn't look up the solution I would not have been able to solve it. So.. I don't really understand this intuitively. I actually thought (before looking at the solution) that it stays the same period T as it is dependent on the gravitational acceleration.

This kind of confuses me, and leaves me feeling that I don't really understand what what the g means in the equation.Thanks in advance.