Question 1 1 pts This is over section 10.1. Consider a point particle with mass 1 kg. At a particular time, it is located at the point (x,y) = (O, 1 meter) and moving in the +x direction with speed 1 m/s. The object is only translating; it is not spinning. As is usual for linear motions, take the origin to be the reference point. What is the magnitude of the angular momentum of this point particle at the instant of interest? 0 Zero Point objects that are moving in a straight line cannot have angular momentum O 1 kg-mA2/s point objects CAN have angular momentum, even if they are only moving in a straight line Question 2 1 pts According to section 10.1, what is the relation between torque and angular momentum? Net torque is the rate of change of angular momentum (with respect to time) Q Angular momentum is the rate of change of net torque (with respect to time) Question 3 1 pts This is over section 10.2. Suppose an object has angular momentum L. It then acquires a change in angular momentum AL. How do you gure out the new angular momentum of the object after the change? 0 Take the change and subtract the original angular momentum 0 Take the original angular momentum and subtract the change. 0 Just add up the original and the change! Question 4 1 pts This is over section 10.3 What is the expression IE3 for? 0 That is the angular momentum for a rigid body. 0 That is the net torque of a rigid body. 0 That is the rate of change otangular momentum for a rigid body. Question 5 1 pts This is over section 10.4. When is the angular momentum of a system constant (i.e., "conserved")? Both of the 2nd and 3rd options above must be true. O Angular momentum of a system is constant if the net torque on a system is zero. Angular momentum of a system is always constant. (It's a law of conservation!) O Angular momentum of a system is constant if the net force on a system is zero. Question 6 1 pts This is over section 10.5. Consider a spinning top. You are analyzing its motion by using the bottom part of the spinning top (where it makes contact with the ground) to be the point of reference. During a short time duration dt, what is the direction of the change in angular momentum dL? O In the same direction as the gravitational torque O Both of the above options are true; use which ever is more convenient. O In the same direction as the gravitational force