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In a popular amusement park ride, a rotating cylinder of radius3.00 m is set in rotation at anangular speed of 6.00 rad/s, as in Figure P7.51. The floor then drops away, leaving the riders suspended against the wall in a vertical position. What minimum coefficient of friction between a rider's clothing and the wall is needed to keep the rider from slipping?
(Hint: Recall that the magnitude of the maximum force of static friction is equal toµn, where n is the normal force - in this case, the force causing the centripetal acceleration.)
The pilot of an airplane notes that the compass indicates a heading due west. The airplane's speed relative to the air is 200 km/h. find the velocity of the airplane relative to the ground
An athlete swings a 4.50-kg ball horizontally on the end of a rope. The ball moves in a circle of radius 1.000 m at an angular speed of 0.540 rev/s. What is the tangential speed of the ball
A surfer is zipping northeast across the river with a velocity of 10 m/s relative to the water. what is the true velocity of the surfer
A child, hunting for his favorite wooden horse, is running on the ground around the edge of a stationary merry-go-round. What is the shortest time it takes for the child to catch up with the horse
A hardworking ant must supply 0.0500 N to pull a small piece of fruit at constant velocity over a distance of 8.00 cm up a small hill to the entrance of the colony. calculate the mass of the piece of fruit in grams
A 5 L rigid (constant volume) container holds 0.60 moles of helium at an initial temperature of 80 oC, How many moles of gas will be in the container at the final temperature
A double convex thin glass lens has equal radii of curvature. The focal length of the lens is +63.5 cm, find The index of refraction of the glass of the plano-convex lens
the speed at which the ball left the quarterback's hand.
A circus performer stretches a tightrope between two towers. He strikes one end of the rope, find the tension in the tightrope
Relativistic reversal of events. Figures 37-25a and b show the (usual) situation in which a primed reference frame passes an unprimed reference frame, in the common positive direction of the x and x' axes, at a constant relative velocity of magnit..
A plate carries a charge of -4 ?C, while a rod carries a charge of 2.50 ?C. How many electrons must be transferred from the plate to the rod
An experimental space station consists of a large rigid rod with length L = 100 m and mass M = 10,000 kg, which rotates about an axis perpendicular to its length and through its center. Two spherical compartments, each containing quarters, laborat..
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