Advertisements
Advertisements
Question
Name a machine for each of the following uses:
- to multiply the force,
- to change the point of application of force,
- to change the direction of force,
- to obtain the gain in speed.
Solution
- Shears are a tool for cutting thin metal sheets; they are a force multiplier.
- Applying force to the pedal rotates the wheel of a cycle with the aid of a chain.
- Water is lifted from the well using a bucket that is attached to a single fixed pulley.
- A set of scissors for cutting the fabric.
RELATED QUESTIONS
What do you understand by a simple machine?
Give two examples of inclined plane where it is used to raise a heavy load with less effort ?
What is an ideal machine?
Define Velocity Ratio
Write an expression to show the relationship between mechanical advantage, velocity ratio, and efficiency for a simple machine.
Comment on the statement ‘The mechanical advantage of a machine is greater than 1’. Give an example of a lever mechanical advantage is:
(i) greater than 1.
(ii) Equal to 1.
Give an example of the following use of a machine to change the direction of force.
Classify the following as a lever, a pulley and an inclined plane:
A wedge
Classify the following as a lever, a pulley and an inclined plane:
A slide
Rearrange the letters and find out the name of the tool.
R L E V E
| ______ | ______ | ______ | ______ |
