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Date: Name: The 3"d Mid-Term Exam Technical Physics 1. In-Person Use handheld calculators if needed. No cellphones or smartwatches. Show your calculations Leaving the classroom during the exam is not allowed unless medically necessary. Multiple choice, 4 points each 1. A ball is whirling counterclockwise on the end of a string with a constant speed when the string breaks. as shown in the picture below. Which trajectory will the ball take? Assume the absence of gravity. a) Path 1 b) Path 2 c) Path 3 d) Path 4 Path 5 2. A car travels the same distance at constant speed around two curves, one with half the radius of curvature of the other. In which, if either, of these curves does the car have the larger centripetal acceleration? a) The curve with the shorter radius b) The curve with the longer radius c) The same centripetal acceleration will happen on both curves faq 0 d) There will be no centripetal acceleration in this motion 3. An object is in a stable static equilibrium if: a) Zero net force is acting on the object tom al arimo o mi goling A .() b) Zero net torque about any axis of rotation is acting on the object The object is at the minimum of its potential energy m/1 00 to supiol guihoxs ed blind A BI d) All of the above 4. Two objects, A and B, have identical total masses and identical shapes. They rotate around the same axis. If the object A has its mass concentrated farther from the axis of rotation than the object B, which object is more difficult to start rotating? a) Object A b) Object B c) It is equally easy to start rotating both objects upon lenoitsliving orfromusesA Shooulq ud gal Sam d) More data is required to answer the question. 5. A force is initially applied at the end of a wrench handle. The force is acting in the direction perpendicular to the handle. Next, the force is applied half-way up the handle instead of at the end. The torque is: a) Unchanged gmint oil To idglod sell neri nogrol to dipnot offT .8 b) A half of the initial torque Squim c) Twice the initial torque d) A quarter of the initial torque e) Four times the initial torque