A body of mass 5 kg is placed at the origion and can move only on x axis a force of 10 N is acting?
... on it in a direction making anangle 60 degree with x axis and displaces it lalong 4 meters the work done by the force is or:... on it in a dire
... on it in a direction making anangle 60 degree with x axis and displaces it lalong 4 meters the work done by the force is
or:... on it in a direction making anangle 60 degree with x axis and displaces it lalong 4 meters the work done by the force is
or:You need to be perfectly prepared in trigonometry to do well in physics. Trigonometry is based on a picture of a circle with the radius making an angle with the x axis. You carry this picture in your head, not your calculator. Trig is mostly imagination and the rest memorization.Remember Chief SohCahToaSin = Opposite/HypotenuseCosine = Adjacent/HypotenuseTangent = Opposite/AdjacentAlso memorize:Sec = 1/CosCsc = 1/SinCot = 1/TanThe force at a given angle is analyzed according to horizontal and vertical projections. The horizontal projection is proportional to the cosine of the angle. 10cos(60) = 10 x 0.5 = 5 newtonsWork is performed by a force acting through a distance.w = 5 newtons x 4m = 20 joules
