- #1
matpo39
- 43
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I am a little stuck on this problem :
Be sure you understand why a pendulum in equilibrium hanging in a car that is accelerating foward tilts backward, and then consider the following: A helium balloon is anchoredby a massless string to the floor of a car that is accelerating foward with acceleration A. Explain why the balloon tends to tilt foward.
I think i was able to explain the pendulum tilting backward, because the acceleration is foward the inertial force is -mA which would act in the opposite direction of the acceleration causing the pendulum to tilt backwards.
Then for the balloon I think that it's tilting foward has to have something to do with the buoyant force and gravity, but I am not sure how to relate the two and also wouldn't the inertal force still be acting in the opposite of the acceleration A, then why would it tilt foward?
thanks for the help
Be sure you understand why a pendulum in equilibrium hanging in a car that is accelerating foward tilts backward, and then consider the following: A helium balloon is anchoredby a massless string to the floor of a car that is accelerating foward with acceleration A. Explain why the balloon tends to tilt foward.
I think i was able to explain the pendulum tilting backward, because the acceleration is foward the inertial force is -mA which would act in the opposite direction of the acceleration causing the pendulum to tilt backwards.
Then for the balloon I think that it's tilting foward has to have something to do with the buoyant force and gravity, but I am not sure how to relate the two and also wouldn't the inertal force still be acting in the opposite of the acceleration A, then why would it tilt foward?
thanks for the help