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The important condition for circular motion is that there must be a constant force acting perpendicular to the motion of the object. In this case there will be a contact force acting on the object from th...

When anything is hit it will vibrate at the same frequency regardless of the force that hits it. This frequency of un-damped oscillations is the natural frequency. And every object/system has its own set ...

Although an object in circular motion travelling at constant velocity isn't accelerating in the conventional sense, ie. changing speed, it's important to remember that it is a vector. Vector quantities ha...

Equate gravitational force (GMm/r^2) to centripetal force (mv^2/r). Rearrange to get v^2=GM/r. Due to the approximated circular orbit v=2pir/T so v^2=4pi^2r^2/T^2. Therefore GM/r=4pi^2r^2/T^2. Rearrangin...

At first glance this question seems require solving in several steps, splitting horizontal and vertical components, taking a value for time from the motion under constant acceleration and then applying th...