Physics

Problem

4\,\text{kg}

block rests on a smooth plane inclined at

37^{\circ}

inside an elevator that is moving upward with a constant acceleration of

3.0\,\text{m s}^{-2}

. Take

g = 9.8\,\text{m s}^{-2}

and

\cos37^{\circ} = 0.8

. Calculate the normal reaction acting on the block. a)

39\,\text{N}

32\,\text{N}

41\,\text{N}

51\,\text{N}