The Simple Pulley
Trending Questions
Name a machine which is used to change the direction of the force.
Lever
Single movable Pulley
Wedge
Single fixed pulley
Question 3 (c)
Fill in the blanks in the following statements:
(c) To move a loaded trolley we have to
An effort of 240 N overcome a useful load 1000 N when applied to a block and system of pulleys; such that the weight movable block and friction is 200 N. What is the efficiency of the system?
82%
81.4%
83.4%
84%
(a) What is the ideal mechanical advantage of a single pulley?
(b) There is no gain in mechanical advantage in case of a single fixed pulley. Explain, why the pulley is then used.
- unaware of the problems faced by the left-handed people
- less intelligent than left-handed people
- purposefully taking a revenge
- unaware of some people being left-handed
The momentum of an object depends on its:
- mass alone
- mass and velocity
- distance
- velocity alone
What kind of action is drawing of water from a well? How can it happen that we are pulling the rope in downward direction and the bucket is moving in upward direction?
[2 Marks]
In a single fixed pulley, the velocity ratio is always less than the mechanical advantage.
False
True