Fred Flintstone’s club–ax is made up of two parts:  an uniform 2.5 kg stick and a symmetrical 8 kg stone attached to the end of the stick.  The dimensions of the club-ax are shown in the figure.  How far is the center of mass from the handle end of the club-ax?

Two bowling balls are at rest on top of a uniform woodenplank with their centers of mass located as in Figure P8.9. Theplank has a mass of 5.00 kg and is 1.00 m long. Find the horizontaldistance from the left end of the plank to the center ofmass of the plank–bowling balls system.

To get up on the roof, a person (mass 62.0 kg) places a 6.80 m aluminum ladder (mass 11.0 kg) against the house on a concrete pad with the base of the ladder 2.00 m from the house. The top of the ladder rests against a plastic rain gutter, which we can assume to be frictionless. The center of mass of the ladder is 2.00 m from the base, as measured along the ladder. The person is standing on the ladder 3.00 m from the base, as measured along the ladder. Find the normal reaction and friction forces (in N) on the ladder at its base. (Enter the magnitudes.)   normal reaction force  friction force

A horse weights 5000 Newtons. The distance between the front and rear hooves is L1= 1.8 meters and the distance from the rear hooves to the center of mass L2=1.1 meters for the horse are shown in the attachment. What fraction of the horses weight is borne by the front hooves?

8.1

Two kids are playing on a seesaw on the school playground. The first kid (of mass 50 kg) sits 2 meters from the fulcrum. The other child (who has a mass of 70 kg) sits on the other side of the seesaw. How far away from the fulcrum does the second child need to sit in order to balance the seesaw? Assume that the seesaw itself is weightless. O 0.79 m O 1.43 m O 1.03 m O 2.24 m

A 200 gram meter stick has a center of mass at the 50 cm mark. You place a pivot at the 50 cm mark, hang 100 grams at the 10 cm mark and hang 200 grams at the 20 cm mark. How much mass must you hang at the 80 cm mark to balance the system?

A uniform, 20-kg, 8.0-m-long, wooden plank that is parallel to level ground is supported by two pivots: one pivot is at the extreme left end of the plank, and the other pivot is 3.0 m inward from the extreme right end of the plank. A 80-kg construction worker, who is initally standing on the extreme left end of the plank, begins to walk to the right. How far from the right end of the plank will the worker be located when the plank begins to tip? 4.0 m 4.0 m 5.0 m a. 4.50 m O b.5.00 m O c. 4.25 m d. 5.25 m O e. 4.75 m

A uniform, 20-kg, 8.0-m-long, wooden plank that is parallel to level ground is supported by two pivots: one pivot is at the extreme left end of the plank, and the other pivot is 3.0 m inward from the extreme right end of the plank. A 80-kg construction worker, who is initally standing on the extreme left end of the plank, begins to walk to the right. How far from the right end of the plank will the worker be located when the plank begins to tip?

The center of mass of a person may be determined by an arrangement such as the one shown in the figure below. A light plank rests on two scales separated by a distance of d = 1.80 m and reading F = 490 N and F = 260 N. Determine the distance of the girl's center of mass 91 from her feet. m -1.80 m