liday, Fundamentals of Physics, 10e NEXT Chapter 08, Problem 048 In the figure,

Question

liday, Fundamentals of Physics, 10e NEXT Chapter 08, Problem 048 In the figure, a block slides down an indline. As it moves from point A to point B, which are 3.8 m apart, force acts on the block, with magnitude 4.6 N and directed down the incline. The magnitude of the frictional force acting on the block is 15 N. If the kinetic energy of the block increases by 31 J between A and B, how much work is done on the block by the gravitational force as the block moves from A to B? Number Units the tolerance is +/-496

Explanation / Answer

E = 31J

= Work = E_grav + 4.6N * 3.8m - 15N * 3.8m

E_grav = -39.52 J

E_grav = 39.52J

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