a simple pendulum, consisting of a mass on a string of length l, is undergoing small oscillations with amplitude a.

Which articulations allow for greatest range of motion?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.