If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve (a real problem on icy mountain roads). (a) Calculate the ideal speed in (m/s) to take a 105 m radius curve banked at 15°. 16.61 m/s (b) What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 15.0 km/h? .2642

If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve (a real problem on icy mountain roads). (a) Calculate the ideal speed in (m/s) to take a 105 m radius curve banked at 15°. 16.61 m/s (b) What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 15.0 km/h? .2642

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A skier swoops down a hill and over a ramp as in the diagram below. She starts from rest at a height of 16 m, leaves the 9.0 m ramp at an angle of 45°, and just clears the hedge on her way down, making an angle of 30° with the vertical as she does. Assuming that there is no friction, and that she is small compared to the dimensions of the problem, solve for H, the height of the hedge in metres. Explain what you are doing.
A highway curve of 120 m radius is banked to give equal wheel reactions for a speed of 48 kph. If the coefficient of friction is equal to 0.6, what is the maximum safe speed which may be attained without skidding?
calculate the engine power. used by a truck with an acceleration of 1.2 m/s2, a loaded weight of 10 tons and other characteristics given below when exiting a 10% inclined slope at a speed of 18km/h.....
When rowing downstream consider the following scenario. The current of the water is moving at 2 m/s in the direction you are rowing. The coefficient of drag between your boat and the water is 1.2, the area in contact with the water is 0.1 m2 and the density of the water is 1000 kg/m3. You are moving at a velocity of 4 m/s into a head wind of 4 m/s. Your coefficient of drag between you and the air is 1.4, the area in contact with the air is 0.4 m2 and the density of the air is 1.2 kg/m3. Your goal is to create a net force moving downstream that is equal to 100 N. How much force must you exert with the oar and in what direction to achieve this net force downstream?
A crate slides down an inclined plane without friction. If it is released from rest and reaches a speed of 6 m/s after sliding a distance of 2.5 m, what is the angle of inclination of the plane with respect to the horizontal?
A disk rotating with constant acceleration of 0.005 revolutions / s2 And the movement starts from rest. What is the angle velocity after one minute? How many turns makes the same disc in point number one after one minute. If an external force does not affect the body, what does that mean? And if the body is in free fall, is its speed constant or variable, what is its acceleration equal, and how can the friction be reduced between the contact surfaces
A child on a sled starts from rest at the top of a 15° slope. If the trip to the bottom takes 15.3 s how long is the slope? Assume that frictional forces may be neglected.
A flatbed truck is moving with an acceleration of 6 m/s2. For what value of the coefficient of static friction between the truck bed and a cabinet will the cabinet slip along the bed surface?
A highway is designed for traffic moving at 65 mph. There is a portion of the highway that the radius of a curveis 900 ft. The curved is banked shown below so that no friction is required to keep cars on the road. Find,a. The required banking angle θ of the road so that no friction is required.b. The minimum coefficient of friction between the tires and the road that would keep traffic from skidding atthis speed if the curve is not banked.
If we give an initial speed of 5 m/s to a disc of wood sliding on an inclined plane whose inclination is 35° and that it crosses 8 m before coming to rest, what is the coefficient of friction? dynamic between disc and surface?
A crate, initially traveling horizontally with a speed of 18 ft/s, is made to slide down a 14 ft chute inclined at 35◦. The surface of the chute has a coefficient of kinetic friction μk, and at its lower end, it smoothly lets the crate on to a horizontal trajectory. The horizontal surface at the end of the chute has a coefficient of kinetic friction μk2. Model the crate as a particle, and assume that gravity and the contact forces between the crate and the sliding surface are the only relevant forces. Using conservation law methods, if μk= 0.35, what is the speed with which the crate reaches the bottom of the chute (immediately before the crate’s trajectory becomes horizontal)?
A steel wire connects two trains at rest on the same track. The wire will snapif it is stretched by as much as 1 percent. The trains begin to accelerate in such away that their velocities, as measured in the ground frame, are always equal.Eventually, the wire snaps. Explain carefully why this happens. How fast are thetrains moving when the wire snaps?