Atable consists of a horizontal thin uniform circular disk of radius r and mass m, supported on its rim by three thin vertical legs that equidistant from each other. the are acceleration due to gravity is g. suddenly removed. find the force exerted by the third leg on (a) suppose two of the legs are the table top immediately after. [20 points] (b) suppose instead that just one of the legs is suddenly removed. find the force exerted by each of the remaining two legs immediately after. 20 points thin solid disk of mass m and radius r, the three principal possibly useful information: for a mr, mr2, and mr moments of inertia about its center are:

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.

Consider the phase change taking place in the picture. you could use all but one statement to describe what is happening here. that is: a) temperature is increasing. b) kinetic energy is increasing. c) the space between the particles remains the same. d) the attractive force between the particles is decreasing.

Derive the formula 2as=v² -u² where the formula have have usual meanings