QUESTION 6.3 What is the magnitude of the torque about the pedal arm's pivot when the arm is at angle 180 with the vertical? Choose one - 3 points QUESTION 7 Q7 A 140-kilogram hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.1 50 meters per second. How much work must be done on the hoop to stop it? Choose one - 10 points 0 3.15] O 440] O -21] O 4.6] 1:057 O Reset Done S. T Practice Problems QUESTION y. T What is the linear speed of a point on the rim of the flywheel? Choose one . 5 points O 27 m/s O 75 m /s O 45.6m/s O 143m/s QUESTION 9.2 What constant angular acceleration will increase the wheel's angular speed to 150 radians per second in 60.0 seconds? Choose one . 5 points O 105rad/s2 1.75rad/s 2 O 2. 5rad/s2 O 0.75rad/s2 SUBMIT TEST1:057 O Reset Done S. T Practice Problems QUESTION 8.2 What is the total angle change of the wheel? Choose one . 5 points O 180rads O 1440rads O 1620rads O 2520rads GROUP 9 Q9 flywheel Group . 2 questions A flywheel with a radius of 0.6 meters is rotating at an angular speed of 45 radians per second. QUESTION 9.1 What is the linear speed of a point on the rim of the flywheel? Choose one . 5 noints SUBMIT TEST1:057 O Reset + Done BACK 3.1 Practice Problems QUESTION IV.5 What would be the net torque on the bar if a force ( F = 10r + 0 ) were applied to the 7-meter point on the bar? Choose one . 3 points O 70NM O - 70 Nm O 0.7Nm -0.7Nm O 61 Nm O -61Nm GROUP 11 Q11 Automobile traveling Group . 2 questions An automobile traveling at 22.222 meters per second has tires of 0.375-meter radii. SUBMIT TEST + 89 . . .1:057 O Reset Done S. T Practice Problems An automobile traveling at ZZ.ZZZ meters per second nas tires of 0.375-meter radii. QUESTION 11.1 What is the angular speed of the tires about their axles? Choose one . 5 points O 8.3ras/s O 59.3rad/s O 0.017rad/s 22.222rad/s QUESTION 11.2 If the car is brought to a stop uniformly in 30.0 complete turns of the tires (without skidding), what is the magnitude of the angular acceleration of the wheels? Choose one . 5 points O 9.33 rad / s 2 0.9grad/s2 SUBMIT TEST1:057 O Reset Done S. T Practice Problems QUESTION 11.2 If the car is brought to a stop uniformly in 30.0 complete turns of the tires (without skidding), what is the magnitude of the angular acceleration of the wheels? Choose one . 5 points O 9.33rad/52 O 0.9grad/s2 O 29. 7 rad/s 2 O 21. 7rad/s 2 QUESTION 12 Q12 What must be the distance between point charge 91 = 2.60 * 10- coulomb and point charge 92 = -4.70 * 10- coulomb for the electrostatic force between them to have a magnitude of 5.70 newtons? Choose one . 10 points 0.003m O 0.000015m O 1.9m O 1.39m SUBMIT TEST1:057 O Reset Done S. T Practice Problems GROUP 8 Q8 Automobile engine Group . 2 questions The angular speed of an automobile engine is increased at a constant rate from 120 radians per second to 300 radians per second in 12 seconds. QUESTION 8.1 What is its angular acceleration in radians per seconds squared? Choose one . 5 points O 180 rad / s 2 -180rad/s2 15rad/s2 O 87 rad/s2 QUESTION 8.2 SUBMIT TESTQUESTION 10.2 What would be the net torque on the bar if a force ( F : 107'" l 321 ) were applied to the S-meter point on the bar? Choose one - 3 points QUESTION 10.3 What would be the net torque on the bar if a force ( F' = 107\"\" l g ) were applied to the 7-meter point on the bar? Choose one - 3 points 0 70Nm O -70Nm O 0.7Nm Q10 lO-meter long bar Group - 3 questions A 10-meter-long metal bar is anchored at one end so that it can rotate freely. Assume the pivot point is at the origin and the bar is on the reference line in cylindrical coordinates. QUESTION 10.1 What would be the net torque on the bar if a force ( F : 10'? l g )were applied to the 10meter point on the bar? Choose one - 4 points