You push downward on a box at an angle 25° below the horizontal with a force of 750 n. if the box is on a flat horizontal surface for which the coefficient of static friction with the box is 0.66, what is the mass of the heaviest box you will be able to move?

72.75 kg

Explanation:

= force applied on a box = 750 N

= mass of the box

= Normal force on the box

= Coefficient of static friction = 0.66

From the force diagram, force equation along the vertical direction is given as

                                                        eq-1

Static frictional force is given as

using eq-1

For the box to move,

m = 72.75 kg

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