Question

A force of 35lb is required to hold a 72lb toolbox on an incline. What angle does the incline make with the horizontal?

Please help me set this up.

Answer 1

wt. of toolbx acts vertically downwards and force acts along the inclined plane.
resolve the wt.into 72cos¡è¢ã 72sin

Answer 2

wt. of toolbx acts vertically downwards and force acts along the inclined plane.
resolve the wt.into 72cos¡è ¡ý, 72sin¡è ¡û
apply conditions of equilibrium,

Answer 3

wt. of toolbx acts vertically downwards and force acts along the inclined plane.
resolve the wt.into 72cos¡è ¡ý, 72sin¡è ¡û
apply conditions of equilibrium, ie Fx=0
72sin¡è=35
then solve by taking inverse of sin¡è
¡è=29.!

Answer 4

wt. of toolbx acts vertically downwards and force acts along the inclined plane.
resolve the wt.into 72cos¡è ¡ý, 72sin¡è ¡û
apply conditions of equilibrium, ie Fx=0
72sin¡è=35
then solve by taking inverse of sin¡è
¡è=29.09.

Answer 5

thank you