A. It can change the direction of force. B. It requires more force to lift an object. C. It can reduce the amount of force required to lift an object. D. It is attached to a fixed point. 相关知识点: 试题来源: 解析 C。解析:文中提到“A movable pulley, on the other hand, moves...
One of the most common types of pulleys is the fixed pulley, which consists of a drum with a fixed axle. As the user operates the device, the rope or wire moves while the pulley remains stationary. The fixed pulley is the opposite of a movable pulley, in which the drum moves up and...
A single movable pulley is able to move over the rope through the groove. Its axis of rotation is not fixed. One end of the rope is fixed and effort is applied to the other end of the rope. The load that is to be moved is hung on a hook of the pulley. It is used to move...
What is the mechanical advantage of single fixed pulley:- 01:24 Three masses of 1 kg, 6 kg and 3 kg are connected to each other with t... 01:16 A balloons of mass M is descending at a constant acceleration alpha. W... 03:27 The surface are frictionless, the ratio of T(1) and...
What Is a Pulley?Douglas Lloyd GChildren's Press(CT)
【预订】What Is a Pulley? 美国库房发货,通常付款后3-5周到货! 作者:LloydG.Douglas出版社:Children\'s Press出版时间:1988年08月 手机专享价 ¥ 当当价降价通知 ¥39.00 配送至 北京 至北京市东城区 服务 由“中国进口图书旗舰店”发货,并提供售后服务。
The idler pulleyis one pulley in a set that drives the belt system of a vehicle. The idler pulley regulates the belts that connect to the crankshaft and are used to produce movement in numerous engine accessories, such as the alternator, steering pump and air-conditioner compressor. ...
A toothed pulley is a type of pulley that is used with a cog belt. There are a number of different situations in which a toothed...
to the pulley, and both of them can move from place to place. In this type, one end of the rope is attached to a fixed point that does not move. With a movable pulley, you need less effort to lift a load. Can you tell how the movable pulley is similar to the Class Two Lever?
What is the value of the mechanical advantage of the given pulley system if it is an ideal pulley system? View Solution Draw a labelled diagram of an arrangement of two pulleys, one fixed and other movable. In the diagram, mark the directions of all forces acting on it. What is the ide...