A 55.0 Kg ice skater is moving at 4.00 m/s when she grabs the loose end of the rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.800 m around the pole. a) Determine the force exerted by the horizontal rope on her arms. b) Compare this force with her weight.

b) The maximum speed that a car can turn a curve of 9.00 m radius without skidding is 70.0 mph (miles per hour). If the coefficient of friction between the tires and the road is 0.600, what is the rated speed of the banked curve? On a wet day, the same car begins to skid on the curve when its speed reaches 60.0 mph. What is the coefficient of friction in this case?   Please answer with complete solution and fre body diagram

A plane in a holding pattern flies at a speed of 250 m/s in a circle with a radius of 22 km.  a) Determine the banking angle of the plane (measured from the horizontal) that would cause the passengers not to need a friction force to stay in their seats.  Use g = 10 m/s/s.  Enter units as degrees.   b) What would be the apparent weight of a 70 kg person in the plane?  Use g = 10 N/kg.

A high-speed railway car goes around a flat, horizontal circle of radius 450 m at a constant speed. The magnitudes of the horizontal and vertical components of the force of the car on a 55.0 kg passenger are 204 N and 539 N, respectively. (a) What is the magnitude of the net force (of all the forces) on the passenger? (b) What is the speed of the car? (a) Number i (b) Number Units Units

A child of mass m rides on a Ferris wheel as shown in figure (a). The child moves in a vertical circle of radius 12.2 m at a constant speed of 2.75 m/s. a circular path at a constant speed. To yield net force vectors with the same magnitude, the normal force at the bottom must be ---Select-- v that at the top. Categorize Because the speed of the child is constant, we can categorize this problem as one involving a particle (the child) ---Select- v, complicated by the gravitational force acting at all times on the child. Тор , Analyze (Use the following as necessary: not m, and g.) We draw a diagram of forces acting on the child at the bottom of the ride as shown in figure (b). The only forces acting on him are the downward gravitational force F, = mg and the upward force n exerted by the seat. The net upward force on the child that provides his centripetal acceleration has a magnitude Fnet.bottom mg Using the particle in uniform circular motion model, apply Newton's second law to the…

a The deflection of the needle would decrease.  b The deflection of the needle would increase.  c The needle would return to its rest position.  d The needle would deflect in the opposite direction.

Current Attempt in Progress A child places a picnic basket on the outer rim of a merry-go-round that has a radius of 5.0 m and revolves once every 27 s. (a) What is the speed of a point on that rim? (b) What is the lowest value of the coefficient of static friction between basket and merry-go-round that allows the basket to stay on the ride? (a) Number i (b) Number i Units Units

A commercial airliner weighing 4x105 N (90,000 lbs) makes a 10º banked turn in a horizontal circle of radius R, traveling at 89.4 m/s (200 mph). Assume the lift force L is perpendicular to its wings. c) Find the lift force in pounds.