A baseball bat balances 72.9 cm from one end. If an 0.525-kg glove is attached to that end, the balance point moves 25.6 cm toward the glove. Calculate the mass of the bat.

A 67.0 kg adult sits at one end of a 10.0 m board, on the other end of which sits his 23.0 kg child. Where should the pivot be placed so the board is balanced if the board has a mass of 12.0 kg? (The board’s center of gravity is at the center of the board.)

The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about 2.15 cm beyond the joint. Assume the forearm has a mass of 2.45 kg and a length of 0.465 m.    When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to hold an object of mass 5.35 kg so that her forearm remains motionless, what is the force F exerted by the biceps muscle? F=?

17. A 0.25 kg meterstick has a 2kg mass suspended from the 80 cm mark and a 0.5 kg mass suspended from the 5 cm mark. At what mark should a pivot be placed to perfectly balance the meterstick? Answer 17:

A sign for a pizza restaurant hangs from a 2.60-m long rod extended out from a building. A cable, attached to the building, is attached to the rod at a point that is 2.10 m from the hidge. (See the figure.)The mass of the rod is 6.50 kg. The mass of the sign is 9.40 kg. The angle between the building and the rod is 73.0 degrees. The angle between the cable and the horizontal is 30.0 degrees.What is the torque on the rod due to the weight of the sign alone? [Take the axis to be at the hinge.]

A uniform meter stick with a mass of  175. grams is placed on a fulcrum. A weight of grams is placed to the right of the fulcrum at a position where the meterstick balances as shown in the diagram. How far must the weight be placed from the fulcrum to balance the meterstick if the fulcrum is located at the  20.0 cm mark?   (10.0 cm)  I know the answer is 10, not sure how to get it.

A baseball bat balances 71.9 cm from one end. If an 0.587-kg glove is attached to that end, the balance point moves 25.8 cm toward the glove. Calculate the mass of the bat.

A 13.6 kg. 3.6 m long seesaw bar (assume that the bar is uniform) is perfectly balanced upon a support that is 0.2 m to the left of its center. There is a 6.5 kg block sitting on the far right side of the seesaw. How large of a mass do we need to place on the far left of the seesaw for it to be balanced?

A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 58.0-gram mass is attached at the 22.5-cm mark, the fulcrum must be moved to the 39.2-cm mark for balance. What is the mass of the meter stick?

The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about 2.15 cm beyond the joint. Assume the forearm has a mass of 2.35 kg and a length of 0.445 m. When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to hold an object of mass 6.15 kg so that her forearm remains motionless, what is the force F exerted by the biceps muscle? 5 Humerus. F= Elbow. Biceps muscle Radius Ulna Hand N