1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
deff fn [24]
2 years ago
6

A luggage handler pulls a 19.0-kg suitcase up a ramp inclined at 34.0 ∘ above the horizontal by a force F⃗ of magnitude 169 N th

at acts parallel to the ramp. The coefficient of kinetic friction between the ramp and the incline is 0.330. The suitcase travels 3.90 m along the ramp.
a)Calculate the work done on the suitcase by F⃗ .


Express your answer with the appropriate units.


b)Calculate the work done on the suitcase by the gravitational force.


c)Calculate the work done on the suitcase by the normal force.


d)Calculate the work done on the suitcase by the friction force.


e)Calculate the total work done on the suitcase.


f)If the speed of the suitcase is zero at the bottom of the ramp, what is its speed after it has traveled3.90 m along the ramp?
Physics
1 answer:
djverab [1.8K]2 years ago
4 0

Answer:

(a) 659.1 J

(b_) 368.56 J

(c) 0 J

(d) - 202.72 J

(e) 824.94 J

(f) 9.32 m/s

Explanation:

mass, m = 19 kg

inclination of the plane, θ = 34°

Force, F = 169 N

coefficient of friction, μk = 0.330

distance moved, d = 3.90 m

(a)

Work done by the force on the suitcase

W = F x d = 169 x 3.90 = 659.1 Joule

(b)

Work done by the gravitational force on the suitcase

W = F x d x Sinθ

W = 169 x 3.9 x Sin 34°

W = 368.56 Joule

(c)

Work done by the normal force on the suitcase

W = Normal force x distance x Cos 90

As the angle between the normal force and the distance is 90°

W = 0 Joule

(d)

Work done by the friction force

W = friction force x distance x Cos 180°

W = - μk x mg x cos 34 x 3.9

W = - 0.33 x 19 x 10 x 3.9 x 0.829

W = - 202.72 Joule

(e)

Total work done

W = 659.1 + 368.56 + 0 - 202.72

W = 824.94 Joule

(f)

According to the work energy theorem, the net work done is equal to the change in kinetic energy of the body.

824.94 = 0.5 x 19 ( v² - 0)

v = 9.32 m/s

You might be interested in
How can understanding velocity help to prevent a mid-air collision
dsp73

Answer:

To maintain enough time to prevent a collision, a system operating in air traffic where aircraft speed does not

fall below 100 km/h (most medium-sized UAVs and GA aircraft) will need to be able to detect obstacles which

subtend an arc-width of as small as 0.125 mra

7 0
2 years ago
What is the Sl unit for momentum?<br> O kg• m<br> O kg<br> O kg• m<br> O kg<br> 2<br> m
Andrej [43]

Explanation:

<h2><em>The </em><em>S. </em><em>I. </em><em> </em><em>unit </em><em>of </em><em>momentum </em><em>is </em><em>Kg. </em><em>m/</em><em>s</em><em>e</em><em>c</em></h2>

<em>hope </em><em>it </em><em>helps </em><em>you </em>

8 0
2 years ago
Draw graph for positive acceleration, negative acceleration and zeo acceleration​
natulia [17]

Answer:

Explanation:

horizontal is zero slope, and the vertical is undefined

3 0
3 years ago
The sizes of most of the cells our bodies are about A.1micrometer
Alekssandra [29.7K]

Answer:

1Mm

Explanation:

i think this one. so it is wrong then also dont be angry with me because iam trying to help u

5 0
2 years ago
Read 2 more answers
I NEED THIS QUICKLY
Yanka [14]
True.


I think that’s the answer.
8 0
3 years ago
Other questions:
  • A 0.0427 kg racquet-ball is moving
    6·1 answer
  • On an essentially frictionless, horizontal ice rink, a skater moving at 5.0 m/s encounters a rough patch that reduces her speed
    10·1 answer
  • Which statement best compares the accelerations of two objects in free fall?
    6·2 answers
  • A 2-ft-thick block constructed of wood (sg = 0.6) is submerged in oil (sg = 0.8), and has a 2-ft-thick aluminum (specific weight
    13·1 answer
  • A neutron star is the remnant left after certain supernovae (explosions of giant stars). Typically, neutron stars are about 18 k
    15·1 answer
  • Is energy released or absorbed during the formation of a solution?
    7·1 answer
  • Sometimes, when the wind blows across a long wire, a low-frequency "moaning" sound is produced. The sound arises because a stand
    15·1 answer
  • Kinematics
    6·1 answer
  • Enlarged brain ventricles are presumed to signify __________. A. an excess of dopamine activity B. frontal lobe abnormalities C.
    12·2 answers
  • 7. Why are cooking pans made of aluminum? {Explain using the specific heat value of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!