Bonus Homework #6, page 1/2 Bonus Homework #6 Submit your answers to the followi
ID: 1860961 • Letter: B
Question
Bonus Homework #6, page 1/2
Bonus Homework #6
Submit your answers to the following problem via Canvas
A block A (mA = 5 kg) is lifted by another block B (mB = 9 kg) as shown in the left figure, or by a 9 (9.81) = 88.29 N force as shown in the right figure. The coefficient of kinetic friction between block A and the inclined surface is ?k = 0.15 in both cases.
1. Which 5-kg block (that is, block A) moves faster?
A) The right one
B) The left one
C) Both 5-kg blocks moves at the same speed
D) More information is needed to answer this question
2. Which of the following statement about the frictional force is true?
A) The frictional force in the left case is greater than the frictional force in the right case.
B) The frictional force in the left case is less than the frictional force in the right case.
C) The frictional force in the left case is equal to the frictional force in the right case.
D) More information is needed to answer this question.
3. Which of the following statement about the tension force of the rope is true?
A) The tension force in the left case is greater than the tension force in the right case.
B) The tension force in the left case is less than the tension force in the right case.
C) The tension force in the left case is equal to the tension force in the right case.
D) More information is needed to answer this question.
4. For the left case: the acceleration of block A is
A) 4.1 m/s2
B) 8.7 m/s2
C) 11.5 m/s2
D) 14.8 m/s2
Bonus Homework #6, page 2/2
5. For the left case: the tension force of the rope is
A) 24.7 N
B) 51.4 N
C) 69.2 N
D) 88.3 N
6. For the right case: the acceleration of block A is
A) 4.1 m/s2
B) 8.7 m/s2
C) 11.5 m/s2
D) 14.8 m/s2
7. For the right case: the tension force of the rope is
A) 24.7 N
B) 51.4 N
C) 69.2 N
D) 88.3 N
Explanation / Answer
1.c
2.d
3.c
4.b
5.a
6.d
7.a