W3.CSS
A body will remain at rest until a —------------- acts on it.
A ------------ pulley changes the direction of the load.
Push and pull are both words used in place of -----------
Fraction can be ---------- by using oil or grease.
An object falls towards the Earth due to the force of:
propeller of a small plane pushes the ---------- to make the plane move forward.
A wheel only becomes a --------------- when it is combined with an axle.
When a force moves a body, the force does -------- on the body.
A fixed pulley changes the:
Function of machine
Direction of load
Efficiency of
None of these machine
When a surface slides over another, the force of friction between them acts:
In the direction of sliding surface
Perpendicular to the direction of sliding surface
Opposite to the direction of sliding surface
In all directions
Opposite to the direction of sliding surface
When a force is applied in one direction, this is called:
To every action, there, is an equal and ------------- reaction.
A swimmer pushes the water in a backward direction to move
The motion of boats and ships on -water is due to the force of :
A rocket is used to carry men and equipment in:
Tension is the force produced in a body when it is ------------
Friction is the force that resists or tries to resist the of one material over another material.
To stop moving vehicles, we use:
--------------- Is often performed with the help of machines.
A pulley or wooden planks are termed as:
Simple machines are usually grouped into:
Five categories
Six categories
Four categories
Seven categories
--------------- Is the simplest of all the machines.
A ----------- is one of the most important inventions of man.
A is ------------ a wheel with a groove made along its circumference so that a rope can move around it.
There are two types of pulley --------- fixed pulley and:
Closed pulley
Unmovable pulley
Movable pulley
Open pulley
Movable pulleys have wide use in heavy industries for lifting and moving:
Heavy machinery
Light machinery
Important machinery
Delicate machinery
An inclined plane is also a simple:
A ----------- is a sort of double inclined plane.
----------- is an agent which changes the state of an object.
