A 70 kg box is resting on a reclining floor. The coefficient of friction between the floor and the box is: static = 0.30, kinetic 0.10. 15) If the floor is to be inclined, what would be the minimum angle of inclination needed so that the box will start to slide down? Express your answer in unit of degrees. 16) If the floor is to be inclined at an angle of 10 deg., what is the needed minimum value of force T (applied to the object with a direction opposite to the direction of sliding) to prevent the box from sliding? Express your answer in unit of N. 17) If the floor is to be inclined at an angle of 25 deg., what is the needed minimum value of force T (applied to the object with a direction opposite to the direction of sliding) to prevent the box from sliding? Express your answer in unit of N.
A 70 kg box is resting on a reclining floor. The coefficient of friction between the floor and the box is: static = 0.30, kinetic 0.10. 15) If the floor is to be inclined, what would be the minimum angle of inclination needed so that the box will start to slide down? Express your answer in unit of degrees. 16) If the floor is to be inclined at an angle of 10 deg., what is the needed minimum value of force T (applied to the object with a direction opposite to the direction of sliding) to prevent the box from sliding? Express your answer in unit of N. 17) If the floor is to be inclined at an angle of 25 deg., what is the needed minimum value of force T (applied to the object with a direction opposite to the direction of sliding) to prevent the box from sliding? Express your answer in unit of N.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
15
Transcribed Image Text:A 70 kg box is resting on a reclining floor.
The coefficient of friction between the floor
and the box is: static = 0.30, kinetic 0.10.
15) If the floor is to be inclined, what would
be the minimum angle of inclination needed
so that the box will start to slide down?
Express your answer in unit of degrees.
16) If the floor is to be inclined at an angle of
10 deg., what is the needed minimum value
of force T (applied to the object with a
direction opposite to the direction of sliding)
to prevent the box from sliding? Express your
answer in unit of N.
17) If the floor is to be inclined at an angle of
25 deg., what is the needed minimum value
of force T (applied to the object with a
direction opposite to the direction of sliding)
to prevent the box from sliding? Express your
answer in unit of N.
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