You are lowering two boxes, one on top of the other, down theramp shown in the figure (Figure 1) by pulling on a rope parallelto the surface of the ramp. Both boxes move together at aconstant speed of 12.0 cm/s. The coefficient of kinetic frictionbetween the ramp and the lower box is 0.434, and thecoefficient of static friction between the two boxes is 0.808.Figure32.0kg48.0kg4.75 m1 of 12.50mPart AWhat force do you need to exert to accomplish this?T =SubmitPart BX Incorrect; Try Again; 2 attempts remainingf=OFIVE ΑΣΦSubmitPrevious Answers Request AnswerWhat is the magnitude of the friction force on the upper box?Part C195| ΑΣΦ?Request Answerup the rampOdown the ramp?What is the direction of the friction force on the upper box?NN

both boxes move together at a constant speed of v=12 cm/s .the coefficient of kinetic friction…

You are lowering two boxes, one on top of the other, down the ramp shown in the figure (Figure 1) by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 12.0 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.434, and the coefficient of static friction between the two boxes is 0.808. Figure 32.0 48.0 kg 4.75 m 1 of 1 > 2.50 m ▼ What force do you need to exert to accomplish this? T= Submit Part B X Incorrect; Try Again; 2 attempts remaining f= V—| ΑΣΦ Submit Previous Answers Request Answer What is the magnitude of the friction force on the upper box? Part C - ΑΣΦ ? Request Answer up the ramp Odown the ramp ? What is the direction of the friction force on the upper box? N N

You are lowering two boxes, one on top of the other, down the ramp shown in the figure (Figure 1) by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 12.0 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.434, and the coefficient of static friction between the two boxes is 0.808. Figure 32.0 48.0 kg 4.75 m 1 of 1 > 2.50 m ▼ What force do you need to exert to accomplish this? T= Submit Part B X Incorrect; Try Again; 2 attempts remaining f= V—| ΑΣΦ Submit Previous Answers Request Answer What is the magnitude of the friction force on the upper box? Part C - ΑΣΦ ? Request Answer up the ramp Odown the ramp ? What is the direction of the friction force on the upper box? N N

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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Stair construction and layout

Stair is a type of vertical transportation in a building which consist of a series of steps in a flight of stairs that enable the vertical movement of people and materials from one floor to another. A staircase consists of steps that comprises of riser & tread, handrail, baluster, stair stringers, newel post and waist slab. The construction of staircase with all the components is termed as stair construction. A staircase is an enclosure that contains the entire stairway. The materials used for the construction of stairs are bricks, reinforced cement concrete, stone, lumber, steel and a combination of these materials.

Question

You are lowering two boxes, one on top of the other, down the
ramp shown in the figure (Figure 1) by pulling on a rope parallel
to the surface of the ramp. Both boxes move together at a
constant speed of 12.0 cm/s. The coefficient of kinetic friction
between the ramp and the lower box is 0.434, and the
coefficient of static friction between the two boxes is 0.808.
Figure
32.0
kg
48.0
kg
4.75 m
1 of 1
2.50
m
Part A
What force do you need to exert to accomplish this?
T =
Submit
Part B
X Incorrect; Try Again; 2 attempts remaining
f=
OF
IVE ΑΣΦ
Submit
Previous Answers Request Answer
What is the magnitude of the friction force on the upper box?
Part C
195| ΑΣΦ
?
Request Answer
up the ramp
Odown the ramp
?
What is the direction of the friction force on the upper box?
N
N

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