The axis of rotation of the pair is vertical and through the toe of the skate on the male skater's leg that is bent backward, the toe being planted into the ice. During the one-armed maneuver first developed in the 1940s, the outstretched arm of the male skater must apply a large force to support a significant fraction of the female skater's weight and also to provide her centripetal acceleration. This force represents a danger to the structure of the wrist of the male skater. (a) Modeling the female skater, of mass 45.0 kg, as a particle, and assuming that the combined length of the two outstretched arms is 129 cm and that arms make an angle of 45.0° with the horizontal, what is the magnitude of the force (in N) exerted by the male skater's wrist if each turn is completed in 2.00 s? How does this force compare to that on one wrist of a 71.0 kg person preparing to do chin-ups by hanging from an exercise bar from the wrists? fmaleskaters wrists/f one wrist of 71.0 kg person=

If you toss a stick into the air, it appears to wobble all over the place. Specifically, about what place does it wobble?

A model airplane with mass 0.750-kg is tethered by a wire so that it flies in a circle of radius 30.0-m. The airplane engine provides a force of 0.800-N perpendicular to the tethering wire. (Consider the airplane to be a point mass) (a) Find the torque that the net thrust produces about the center of the circle.   Answers: (a) 24.0 N m

To type your equations, you can enter Greek letters by selecting the MathType popup button (red radical) in the answer box. For Greek letters, press the right-facing arrow next to the alpha (a) symbol. tan(0) = (d) Based on your answer for (c), if the bicycle is vertical (8=0°), will it be able to traverse the curve while maintaining balance? O yes O no Why? (e) Calculate for a 11 m/s turn of radius 32 m. 8= degrees

An astronaut accidentally let go of a wrench, leaving it in uniform linear motion in outer space. The astronaut claims that, by Newton's first law, the wrench will continue to be in uniform linear motion even without an unbalanced net force acting on it.  - True - False

If I am given a problem that provides the weight of a car and its inclination from the ground, how do i find the magnitude of the force against each tire?

(a) A 19.0 kg child is riding a playground merry-go-round that is rotating at 45.0 rev/min. What centripetal force (in N) must she exert to stay on if she is 3.00 m from its center? (Enter a number.) (b) What centripetal force (in N) does she need to stay on an amusement park merry-go-round that rotates at 3.00 rev/min if she is 8.00 m from its center? (Enter a number.) (c) Compare each force with her weight. (For each answer, enter a number.) (force from (a))/(weight) (force from (b))/(weight)

When two unequal masses are balanced on either side of the (balanced) meter stick, what is the  relationship between the ratios of the masses and the ratios of their lever arms?

Whenever a helicopter has two sets of lifting blades, they rotate in opposite directions (and there will be no tail propeller). Explain why it is best to have the blades rotate in opposite directions.

A 1.5 kg block is connected by a rope across a 50-cm-diameter, 2.0 kg pulley, as shown. There is no friction in the axle, but there is friction between the rope and the pulley; the rope doesn’t slip. The weight is accelerating upward at 1.2 m/s2. What is the tension in the rope on the right side of the pulley?