Question

So we are learning about the Free Body diagram and method but I don't fully understand how to apply the steps to the problem. 1st I have to identify all the forces acting such as gravity by drawing it out. 2nd I have to use that drawing and draw it in a free body diagram form in the x-axis and y-axis where the object is at the origin and that the forces are arrows and then rotate it the degree that is given. Then write the equation of the 2nd law of motion before rewriting it again with the numbers from the word problem. This includes an equation for the compounds of the forces where either the object is in mechanical equilibrium or not. Then using that information I solve the equation for the quantity of interest. Also is there a difference between the object sliding down on a rough surface and a smooth surface?

A 0.422 kg block is sliding down a rough surface that is inclined 13.6° with respect to the horizontal. The coefficient of kinetic friction for the surface is 0.162. A force, directly opposing the block's motion, sufficient to cause it to slide with constant velocity, is being exerted on the block while it moves a) Identify all the forces that are acting on the block (Hint: There are four) You may draw a picture to do this. b) Draw a free body diagram for the block and appropriately tilu/rotate its axes. c) Write Newton's laws of motion equations for the x and y components of the net force acting on the block and use these equations to find the magnitude of the force that is opposing the block's motion.

Answer 1

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