blem 4 120 points) True/False (circie one, if false provide an explanation) 2 T

Question

blem 4 120 points) True/False (circie one, if false provide an explanation) 2 T I F TIF TF For the motor hoist shown to the right: A) The rate at which the weight is lifted is 1/2 the rate at which the cable is taken up by the spool mounted on the motor shaft B) The tension in the cable at A is greater th as the weight is being raised. an the weight,2 he gear train shown to the right Weight C) The torque on the follower is twice that of the driver D) Given an initial velocity of 5 m/s at A, the roller coaster will be able to get over the ump at B.e v,=5 m/s A 2m 1m Torque (Nm) Power (Watts) E) The motor operates at a peak efficiency when the power output is at 90 W and an angular velocity of 250 rpm 0.4 100 3 0 8 E 0.2 0.1 0 250 500 750 1000 Anguiar Velocity (RPN

Explanation / Answer

A- True...

B- True

C- false

D - True Totall energy at point A = total energy at point B

1/2 (M *V*V) + Mgh = 1/2(M *v*v)+ MgH

E- True

12.5+ 10 = 1/2 v*v + 20

v = sqrt (5) = 2.2 m/s

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---

---

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