A box is placed on top of a 30-degree inclined plane that has 0.10 as its coefficient of static friction. What is the mass of the box if a horizontal force of 90 pound is applied to the box to prevent it from sliding downward? Assume that the horizontal force is parallel to the inclination. *

A box is placed on top of a 30-degree inclined plane that has 0.10 as its coefficient of static friction. What is the mass of the box if a horizontal force of 90 pound is applied to the box to prevent it from sliding downward? Assume that the horizontal force is parallel to the inclination. *

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

With FBD and Solution pls refer to the second picture if the answer is in the choices one of those 4 answers is correct

A box is placed on top of a 30-degree
inclined plane that has 0.10 as its coefficient
of static friction. What is the mass of the box
if a horizontal force of 90 pound is applied to
the box to prevent it from sliding downward?
Assume that the horizontal force is parallel
to the inclination. *

O 2.448 slugs
O 4.929 slugs
O 6.774 slugs
O 8.335 slugs
O 10.329 slugs

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