Question

For problem 6-7, consider the three vectors shown below: 6.What is the direction of A x Č? A) Into the page B) Out of the page Upwards along the page D) Downwards along the page -7.What is the direction of #x č? A) Into the page C) Upwards along the page Dnards along the page B) Out of the page 8.A grinding wheel is spinning at a rate of 20.0 revolutions per the power to the grinder is turned off, the grinding wheel slows with constant angular acceleration and takes 80.0 s to come to a rest. What was the angular acceleration of the grinding wheel as it came to rest? A) 1.57 rad/s B) 0.250 rad/s C) 0.00 rad/s D) It cannot be determined. 9. A grinding wheel is spinning at a rate of 20.0 revolutions per second. When the power to the grinder is turned off, the grinding wheel slows with constant angular acceleration and takes 80.0 s to come to a rest. How many revolutions did the wheel make during the time it was coming to rest? A) 150 B) 400C) 800 D) 1600 E) 2t 10.True or false. A smaller force can never exert a greater torque than a larger force A) True B) False 一11,True or false. The net torque on a system can be zero while the net force on the same system is non-zero. A) True B) False 12.The moment of inertia of a solid cylinder rotated about the center (point x) is MR2. What is the moment of inertia if the disk is rotated about a point at the edge of the disk, as shown below (about point 0)? A) MR2 B) MR2 C) MR2 D)It cannot be determined 10

Answer 1