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- A roller coaster car goes through a loop, which can be modeled as a portion of a circular arc, at a constant speed. At the top of the loop (when the roller coaster is upside down), how does the magnitude of the normal force compare to the roller coaster car's weight? a) The normal force is greater than the weight b) The normal force is less than the weight c) The normal force is equal to the weight d) There isn't enough information to tell, since the answer depends on the roller coaster car's speed2. (a) A distant planet has radius 3.6 x 106 m. A 6 kg cat weighs 22 N on the surface of this planet. Calculate the mass of the planet. (b) You push a 65 kg desk horizontally and it accelerates at 1.2 m/s2. If the coefficient of kinetic friction between the desk and floor is 0.38, calculate the magnitude of the force you apply to the desk.A car is rounding a turn on a road that is banked at some angle with respect to the horizontal. The road is covered with ice and there is no friction between the road and the tires. which of the following forces is responsible for keeping the car on its circular path? The horizontal component of the force of gravity It is impossible for the car to stay on a circular path in this situation The vertical component of the force of gravity The horizontal component of the normal force The vertical component of the normal force Complete the following sentence. Centripetal forces enable objects to follow circular trajectories with constant speed. enable objects to follow circular trajectories with constant acceleration. O are described by Hooke's law for springs. double in magnitude when an object's speed in uniform circular motion is doubled. OOOO
- A mountain climber swings a grappling hook (m=0.75 kg) at the end of a 0.6 m long rope in a vertical circle with a speed of 11 m/s. Determine the tension in the rope when the hook is at the top of the circle.46. Please help answer this question thank you so much!:))What "g-force" acts on an Air Force Thunderbird pilot (mass = 78-kg) who, at the top of a loop of radius 8.5 x 102 meters, is traveling at a speed of 320 knots? 1 knot = .5144 m/s "g-force" in this case is equivalent to the normal force acting the pilot Give your answer in Newtons to the correct significant figures (2 in this case).
- A 2.35 kg water bucket is swung in a full circle of radius 0.824 m just fast enough so that the water doesn't fall out at the top (meaning n = 0 there). What is the speed of the water at the top? (Unit = m/s) EnterA car weighs 8500 N and is rounding a bend in the road. The radius of the curve is 100 m and the car is moving at 30 meters per second what is the force of friction between the tires and the road(Assume the car stays on the road)The harder you hit the brakes while driving forward, the more the front end of your car will move down (and the rear end move up). Why? What happens when cars accelerate forward? Why do drag racers not use front-wheel drive only?