圆周运动例题及答案(国外英文资料).docVIP

圆周运动例题及答案(国外英文资料) Examples and answers to circular motion Knowledge standard 1. Basic concepts (1) uniform velocity circular motion: the motion of a particle along a circle and equal in time. (2) make the condition of uniform circle motion: the magnitude of the external force, the direction, the speed and the speed. (3) angular velocity: the ratio to the time used, the expression omega =, unit: symbol. (4) the relation between linear velocity and angular velocity: (5) cycles and frequencies (6) centripetal acceleration (7) centripetal force (8) eccentric movement; 2, problem-solving ideas: (1) general thinking (2) the solution of some special problems Classic questions: 1. The following statement is correct............................................................ () A. objects in uniform motion are in equilibrium B. is the constant force of an object that is subjected to uniform circular motion C. the velocity of a body moving uniformly at a constant velocity is constant D. the acceleration of a body moving uniformly at a constant speed is constant 2, as shown in the figure, a belt drive, right wheel radius is r, a is a point on the edge of it; the left is a big wheel, wheel radius is 4R, a radius of 2R and B in the ferry, the ferry center distance of R. The C points and the D points are located on the edge of the small and large wheels respectively. If the belt does not skid during transmission.................................... () The A and B points have equal linear velocity The angular velocities of a points and B points are equal The line velocity of a point and C point are equal The centripetal acceleration of a point and D point is equal A., B., C., D., II 3, as shown in the picture, the fixed cone funnel wall is smooth, the wall has two equal mass of small ball A and B, at each of the different levels of uniform circular motion, the following statement is correct......... () A. VAVB B. Omega A Omega B C. aAaB D. pressure NANB 4. The centripetal force is