I have difficulties doing some explanatory questions, which I am not sure how to support the following events:
Explain the following with ref to Newton's Laws and the forces involved.
(a) A woman at the equator weights herself daily on a bathroom scale. Suppose that the earth rotates 3x faster, will the reading change?
(b) The moon does not fall towards teh earth although it is udner the pull of earth's gravity.
For each of the following scenarios, state and explain whether the object in motion requires a maximumor minimum speed to maintain its motion in a circle
(a) A car going over a hump (a circular arc) - It should be minimum speed but dont know how to explain...
(b) water in a apil being swung in a verrtical circle (hmmm, minimum speed at the top and max speed at the bottom?)
(c) A bus negotiating a circular bend on the road (not very sure about this one.)
Sorry i know this is quite a number of questions to be answered but i need help in doing such conceptual questions. thanks all