A person pulls a 10kg suitcase along a horizontal surface using a rope. the rope

Question

A person pulls a 10kg suitcase along a horizontal surface using a rope. the rope makes an angle of 30 degrees with the horizontal. The coefficient of static friction of the suitcase with the floor is 0.2. the coefficient of the kinetic friction is 0.3.
A.) with what force does the person have to pull on the rope to start the suitcase moving from rest?
B.) if the person continues to pull with this force, what will the acceleration of the suitcase be?
C.) how fast will the suitcase be going after 2 seconds?
D.) are these answers reasonable?

Please show your work THanks!

Explanation / Answer

a) Force needed to get suitcase moving

Fs =   s x mg cos 30

.2 (10 kg) ( 9.8 m/s2) cos 30

Fs = 16.97 N

b) F = m a 16.97 = 10kg a

a = 1.7 m/s^2

c) vf = vi + at

vf = 0 + 1.7 ( 2)

33.9 m/s   

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.