A 10.0 kg pail of water is carried by a woman and her young son each holds one end of a 2.00 m pole thrust through the pail’s handle. The mass of the pole is 2.00 kg. If the woman carries twice as much weight as her son, the pail hangs
a. 40.0 cm from the woman’s hand
b. 46.7 cm from the woman’s hand
c. 50.0 cm from the woman’s hand
d. 60.0 cm from the woman’s hand
e. 66.7 cm from the woman’s hand
A 10.0 kg pail of water is carried by a woman and her young son each...
A woman lifts a 3.6-kg barbell in each hand with her arm in a horizontal position at the side of her body and holds it there for 3 s (see the figure below). What force does the deltoid muscle in her shoulder exert on the humerus bone while holding the barbell? The deltoid attaches 13 cm from the shoulder joint and makes a 13? angle with the humerus. The barbell in her hand is 0.55 m from the shoulder joint,...
To develop muscle tone, a woman lifts a 4.50 kg weight held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0°. a) What is the angular acceleration (in rad/s2) if the weight is 24.0 cm from the elbow joint, her forearm has a moment of inertia of 0.250 kg · m2, and the net force she exerts is 500 N at an effective perpendicular lever arm of 2.20 cm? (Ignore gravity)...