Which of the following statements are true of an object moving in a circle at a constan speed? Select all that apply. The velocity of the object is changing. The net force experienced by the object is 0 Newtons. O The object is at equilibrium. The direction of the object is changing. The object is accelerating.
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Q: A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. The airplane travels at…
A: The angular speed of the revolutions ia, ω=2πT=2π0.123 hr=2π0.123×60×60 s=0.0142 rad/s The…
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Q: Both parts please!!
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Q: A jet airplane is in level flight. The mass of the airplane is m = 9010 kg. The airplane travels at…
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Q: A jet flying at 136 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m,…
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Q: A 59.0-kg ice skater is moving at 4.07 m/s when she grabs the loose end of a rope, the opposite end…
A: The force exerted by the horizontal rope is the centripetal force acting on the ice skater is,
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Q: A car is making a turn on an unbanked curve that has a radius of 50.0 m. There is a 5.0 kg box in…
A: (a) The figure shows the free body diagram of the car Banked turn on unbanked curve.
Q: A 59.0-kg ice skater is moving at 4.07 m/s when she grabs the loose end of a rope, the opposite end…
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Q: A cat dozes on a stationary merry-go-round, at a radius of 5.40 m from the center of the ride. Then…
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A: The expression for find gravitational force is Fg=GMmr2=GMm7.9re2
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- Which of the following is impossible for a car moving in a circular path? Assume that the car is never at rest. (a) The car has tangential acceleration but no centripetal acceleration. (b) The car has centripetal acceleration but no tangential acceleration. (c) The car has both centripetal acceleration and tangential acceleration.In Example 2.6, we considered a simple model for a rocket launched from the surface of the Earth. A better expression for the rockets position measured from the center of the Earth is given by y(t)=(R3/2+3g2Rt)2/3j where R is the radius of the Earth (6.38 106 m) and g is the constant acceleration of an object in free fall near the Earths surface (9.81 m/s2). a. Derive expressions for vy(t) and ay(t). b. Plot y(t), vy(t), and ay(t). (A spreadsheet program would be helpful.) c. When will the rocket be at y=4R? d. What are vy and ay when y=4R?A vehicle is zooming along a very hilly stretch of road. First it goes over a hump in this road then downhill through an empty ditch before climbing back uphill as it ascends from the ditch and climbs up the bank. The hump in the road which has a radius of 20.0m. the car’s weight is 9800N a)How fast can it go over the hump without lifting up above the surface of the road? B)After it goes over the hump and is navigating through the bottom of the ditch as it begins to climb back out must the normal force be bigger or smaller (which) than it is on horizontal ground? Why?
- Disturbed by speeding cars outside his workplace, Nobel laureate Arthur Holly Compton designed a speed bump (called the "Holly hump") and had it installed. Suppose a 1 800-kg car passes over a hump in a roadway that follows the arc of a circle of radius 19.6 m (a) If the car travels at 25.0 km/h what force does the road exert on the car as the car passes the highest point of the hump? magnitude N direction (b) What is the maximum speed the car can have without losing contact with the road as it passes this highest point?A car of mass 1,750 kg travels along a circular road of radius 85.0 m at 20.0 m/s. (a) Calculate the magnitude of the car's centripetal acceleration. |m/s? (b) What is the magnitude of the force of static friction acting on the car? NWhich of the following statements are true of an object moving in a circle at a constant speed? Include all that apply. The acceleration and the net force vector are directed perpendicular to each other. The acceleration of the object is directed tangent to the circle. There can be a force pushing outwards on the object as long as the net force in inwards. The object experiences a force which has a component directed parallel to the direction of motion. If the net force acting upon the object is suddenly reduced to zero, then the object would suddenly depart from its circular path and travel tangent to the circle. Because the speed is constant, the acceleration is zero. Inertia causes objects to move in a circle.
- An airplane is flying in a horizontal circle at a speed of 441 km/h. If its wings are tilted 40° to the horizontal, what is the radius of the circle in which the plane is flying? Assume that the required force is provided entirely by an "aerodynamic lift" that is perpendicular to the wing surface. m I 0You are making a circular turn in your car on a horizontal road when you hit a big patch of ice, causing the force of friction between the tires and the road to become zero. While the car is on the ice, it O A. moves along a straight-line path in its original direction. O B. moves along a straight-line path toward the center of the circle. O C. continues to follow a circular path, but with a radius larger than the original radius. O D. moves along a straight-line path away from the center of the circle. O E. moves along a path that is neither straight nor circular.A vehicle is zooming along a very hilly stretch of road. First it goes over a hump in this road then downhill through an empty ditch before climbing back uphill as it ascends from the ditch and climbs up the bank. The hump in the road which has a radius of 20.0m. the car’s weight is 9800N a)How fast can it go over the hump without lifting up above the surface of the road?
- A small black with mass 0.0700 kg slides in a vertical circle of radius R= 0.800 m on the inside of a circular track, There is no friction bětween the track and the block, t the bottom of the block's path, the normal force that the track exerts on the block has magnitude 4.00 N. what is the magnitude 'of the normal force that the track exerts on the block when it is at the top of its path?A jet flying at 117 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 1.66 × 105 kg. Calculate the magnitude of the necessary lifting force. L= iWhich of the following statements are true of an object moving in a circle at a constant speed? Include all that apply. The object experiences a force which has a component directed parallel to the direction of motion. Inertia causes objects to move in a circle. There can be a force pushing outwards on the object as long as the net force in inwards. Because the speed is constant, the acceleration is zero. The acceleration and the net force vector are directed perpendicular to each other. If the net force acting upon the object is suddenly reduced to zero, then the object would suddenly depart from its circular path and travel tangent to the circle. The acceleration of the object is directed tangent to the circle.