Physics
Name a machine which is used to:
(a) multiply force
(b) multiply speed, and
(c) change the direction of force applied.
Related Questions
What is the velocity ratio of a single fixed pulley?
In a single fixed pulley, if the effort moves by a distance x downwards, by what height is the load raised upwards?
State whether the following statements are true or false.
(a) The velocity ratio of a single fixed pulley is always more than 1.
(b) The velocity ratio of a single movable pulley is always 2.
(c) The velocity ratio of a combination of n movable pulleys with a fixed pulley is always 2n.
(d) The velocity ratio of a block and tackle system is always equal to the number of strands of the tackle supporting the load.
What is a fixed pulley? State its one use.