A race car rounds a curve at 59 m/s. The radius of the curve is 420 m, and the car's mass is 700 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive. Indicate the direction with the sign of your answer.) (a) What is the car's (centripetal) acceleration? m/s2 What is it in g's? g (b) What is the centripetal force acting on the car

A race car rounds a curve at 59 m/s. The radius of the curve is 420 m, and the car's mass is 700 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive. Indicate the direction with the sign of your answer.) (a) What is the car's (centripetal) acceleration? m/s2 What is it in g's? g (b) What is the centripetal force acting on the car

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 7OQ: A door in a hospital has a pneumatic closer that pulls the door shut such that the doorknob moves...

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A door in a hospital has a pneumatic closer that pulls the door shut such that the doorknob moves with constant speed over most of its path. In this part of its motion, (a) does the doorknob experience a centripetal acceleration? (b) Does it experience a tangential acceleration?
Modem roller coasters have vertical loops like the one shown here. The radius of curvature is smaller at the top than on the sides so that the downward centripetal acceleration at the top will be greater than the acceleration due to gravity, keeping the passengers pressed firmly into their seats. (a) What is the speed of the roller coaster at the top of the loop if the radius of curvature there is 15.0 m and the downward acceleration of the car is 1.50 g ? (b) How high above the top of the loop must the roller coaster start from rest, assuming negligible friction? (c) If it actually starts 5.00 m higher than your answer to (b), how much energy did it lose to friction? Its mass is 1.50103kg .
A) Sammy is driving a 1575 kg car at 121km/h in a horizontal plane around a banked curve with a radius of 102m. What is the total force of the road on his car during the turn? Also have a FBD diagram. B) If the curve was unbanked, would that change the answer? why?
What is the maximum speed with which a 1300 kg car can round a turn of radius 100.0 m if the coefficient of static friction between the tires and the road is 0.70? Does the result depend onthe mass of the car? What is the centripetal acceleration of the car at the maximum speed it can go around the turn? What is the corresponding centripetal force on the car?
What is the maximum speed at which a car can round a curve of 25m radius on a levelroad if the coefficient of static friction between the tires and the road is 0.8?
Answer the follwing questions The bobsled track at the 1994 Olympics contained turn with radii of 33 m. Find the centripetal acceleration at the turn for a speed of 340 cm/sec. What is the maximum speed at which a car can safely negotiate an unbanked turn with radius of 60 m in icy weather, where the coefficient of static friction is 0.10? An 8 kg block initially at rest is pulled to the right along a horizontal surface whose coefficient of friction 0.1by a constant force of 34 N. Find the speed of the block after it has moved 2 m.
A body of mass 10 kg, is moving with a velocity of 5 m/s in a circle of radius 5 m, what is the centripetal acceleration of the body? A body of weight 20 N, mass 2 kg is moving in vertical circular motion with the help of a string of radius 1 m and with a velocity of 2 m/s. What is the tension in the string at the lowest point?
A 1000 kg car enters an unbanked curve of 1 km radius with a velocity of 80 kph. What is the minimum coefficient of friction between the road and the car that will allow the car to travel through the turn without banking? Correct answer is 0.05
What is the maximum speed with which a 1050 kg car can round a turn of radius 77m on a flat road if coefficient of static friction between tires and road is 0.80?
What is the friction force on a 1800kg car if it rounds a curve with a radius of 110m at a speed of 15m/s? what minimum coefficient of friction is needed?
A car with a mass of 1000kg travels around a banked curve of radius 40m with a speed of 27m/s. In the absence of friction, what are the values of the horizontal and vertical components of the normal force?
A pilot of mass m= 70 kg in a jet aircraft executes aloop-the-loop, as shown in Figure. In this maneuver, the aircraftmoves in a vertical circle of radius r=3.00 km at a constant speedof 250 m/s. (a) Calculate the centripetal accelaration of the aircraft.Determine the force exerted by the seat on the pilot (b) at thebottom of the loop and (c) at the top of the loop.g=9.8 m/s2