Physics

Problem

10\,\text{kg}

crate is placed on a smooth

45^{\circ}

incline. A vertical downward force of

20\,\text{N}

is applied on the crate by a push rod. Take

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

. Determine the normal reaction between the crate and the plane. a)

55\,\text{N}

83\,\text{N}

89\,\text{N}

69\,\text{N}