2. You pull a 70 kg block up a 400 incline so that the tension ofthe rope is parallel to the incline. The block starts from rest andthe incline has a coefficient of friction of 0.4. The tension issuch that the block accelerates up the ramp at 1.5 m/s2.
a. Draw a free body diagram.
b. What is the tension?
c. If the block moves 5 m, using kinematics, what is the finalvelocity?
d. How much work does each force do on the block while moving the 5m?
e. What is the net work done on the block?
f. Using the work energy theorem, what is the final velocity of theblock?
g. How long does it take you to pull the block 5 m (usekinematics)?
h. What is the impulse given the block for this time period? (hint:impulse is defined as a NET force for a short period oftime).
i. What is the change in momentum across the 5 m? Are your answersconsistent?
2. You pull a 70 kg block up a 400 incline so that the tension ofthe rope is parallel to the incline. The block starts from rest andthe incline has a coefficient of friction of 0.4. The tension issuch that the block accelerates up the ramp at 1.5 m/s2.
a. Draw a free body diagram.
b. What is the tension?
c. If the block moves 5 m, using kinematics, what is the finalvelocity?
d. How much work does each force do on the block while moving the 5m?
e. What is the net work done on the block?
f. Using the work energy theorem, what is the final velocity of theblock?
g. How long does it take you to pull the block 5 m (usekinematics)?
h. What is the impulse given the block for this time period? (hint:impulse is defined as a NET force for a short period oftime).
i. What is the change in momentum across the 5 m? Are your answersconsistent?
