Question

A train, traveling at a constant speed, makes an 1800 turn on a semicircular section of track and heads in a direction that is opposite to its initial direction. On the semicircular section of the track, a centripetal force acts on the train.

Answer 1

Physics question on centripetal force related to a train executing a turn, requiring a net force to change velocity direction while speed remains constant.

Step-by-step explanation:

Centripetal Force and Uniform Circular MotionThe subject of the question is Physics, specifically related to the concept of centripetal force and uniform circular motion. When a train travels on a semicircular track at constant speed, it experiences a centripetal force directed towards the center of the circle, which is necessary for executing the turn and changing the direction of velocity while maintaining the same speed.

This centripetal force is the net force causing the train to follow a circular path and could stem from various forces, such as friction between the train's wheels and the tracks. As per Newton's second law of motion (Fnet = m×a), the centripetal force (Fc) is the product of the train's mass and centripetal acceleration, with the acceleration directed perpendicular to the velocity, towards the center of the circular path.The subject of this question is Physics. It involvesthe concept of centripetal force in uniform circular motion.The centripetal force is the net force that acts on an object moving in a circular path at a constant speed. It is directed toward the center of curvature and causes the object to accelerate toward the center.Examples of centripetal force include tension in a rope, gravity, friction, and electrical attraction. It is calculated using Newton's second law of motion, which states that net force is equal to mass times acceleration.