Question 5 The following figure shows a top view of a small 19.2 g bug standing at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. The other end of the bar pivots about a nail driven into the table and can rotate freely, without friction. The bar has mass 60.5 g and is 152 cm in length. The bug jumps off in the horizontal direction, perpendicular to the bar, with a speed of 33.8 cm/s relative to the table. axis 73 1 bug

The puck in the figure below has a mass of 0.260 kg. Its original distance from the center of rotation is 40.0 cm, and it moves with a speed of 90.0 cm/s. The string is pulled downward 15.0 cm through the hole in the frictionless table. Determine the work done on the puck. (Hint: Consider the change of kinetic energy of the puck.)

A 10.0-kg bob is attached to a rod whose length is 10.0 m. The right end of the rod is fixed, and the bob is released from rest. a) Determine the speed of the bob when it is below the pivot point (vertical angle is zero). b) Determine the tension in the rod when the bob is below the pivot point. hint: to determine the speed of the bob when it is below the pivot point, you will need to use Calculus.

A slender metal rod has a mass MM and length LL. The rod is first rotated about a perpendicular axis through its center with an angular velocity ωω (see figure (a) below). It is then rotated about a perpendicular axis through its end at the same angular velocity (see figure (b) below). Part A Find the ratio of the kinetic energy of the first case to that of the second case. Express your answer using three significant figures.