Is the following statement true or false? Based on convention, a positive torque is the one that causes clockwise rotation; a negative torque is the one that causes counterclockwise rotation. True False
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A: SOlution: Identify the direction of angular velocity.
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- Force F = (- 5.5 N )î + (2.9 N )ĵ acts on a particle with position vector 7 magnitude of the torque on the particle about the origin and (b) the angle between the directions of 7 and F ? = (4.3 m )î + (8.3 m )§.What are (a) theIn our class model, wind is flowing along the X axis and torque is generated in the Y axis, with torque measurements in the other axes being near 0. What would happen in reality if the torque in the X axis were large, even larger than in the Y axis? (select only one) The turbine would spin really fast and produce more energy O The turbine would not spin at all The wind could tip over the turbine O The turbine would spin backwards 1or hoth 2 a nd 2An automobile engine can produce 200 N · m of torque. Calculate the angular acceleration produced if 95.0% of this torque is applied to the drive shaft, axle, and rear wheels of a car, given the following information. The car is suspended so that the wheels can turn freely. Each wheel acts like a 15.0 kg disk that has a 0.180 m radius. The walls of each tire act like a 2.00-kg annular ring that has inside radius of 0.180 m and outside radius of 0.320 m. The tread of each tire acts like a 10.0-kg hoop of radius 0.330 m. The 14.0-kg axle acts like a rod that has a 2.00-cm radius. The 30.0-kg drive shaft acts like a rod that has a 3.20-cm radius.
- A turn table starts from rest and reaches 11 rad/s of angular velocity in 9.0 s. Find the total angle it turned during the time in rad. Hint: use rotational kinematics formula. Assume initial angle and initial angular velocity as zero. Your Answer:Two wheels A and B in the figure are connected by a belt that does not slip. The radius of B is 2.31 times the radius of A. What would be the ratio of the rotational inertias lA/Ig if the two wheels had (a) the same angular momentum and (b) the same rotational kinetic energy? B (a) Number i Units (b) Number i UnitsThe uniform solid block in the figure has mass 25.9 kg and edge lengths a = 0.763 m, b-1.40 m, and c=0.114 m. Calculate its rotational inertia about an axis through one corner and perpendicular to the large faces. Rotation asis Number Units
- Two wheels A and B in the figure are connected by a belt that does not slip. The radius of B is 7.82 times the radius of A. What would be the ratio of the rotational inertias IA/IB if the two wheels had (a) the same angular momentum and (b) the same rotational kinetic energy?This states that the torque exerted on an object is equal to the product of the object's moment of inertia and its angular acceleration. A Third Law of Rotational Motion B Second Law of Rotational Motion First Law of Translational Motion First Law of Rotational MotionTwo wheels A and B in the figure are connected by a belt that does not slip. The radius of B is 2.10 times the radius of A. What would be the ratio of the rotational inertias IA/lB if the two wheels had (a) the same angular momentum and (b) the same rotational kinetic energy? (a) Number Units (b) Number i Units
- A top of rotational inertia 4.0kg•m^2 receives a torque of 2.4Nm from a physics professor. The angular acceleration of the body will be_____Two wheels A and B in the figure are connected by a belt that does not slip. The radius of B is 3.32 times the radius of A. What would be the ratio of the rotational inertias lA/lg if the two wheels had (a) the same angular momentum and (b) the same rotational kinetic energy?