Advertisements
Advertisements
प्रश्न
Which machine will you use to do the following work? Write their type.
To cut vegetables.
उत्तर
To cut vegetables, we should use a knife, which is a wedge.
संबंधित प्रश्न
When is work said to be done by a force?
Can a machine have an efficiency of 100%? Give a reason to support your answer.
What do you understand by a simple machine?
What is an ideal machine?
Give an example of the following uses of a machine:
to obtain gain in speed
Write an expression to show the relationship between mechanical advantage, velocity ratio, and efficiency for a simple machine.
Define mechanical advantage (M.A.) of the machine.
Establish a relationship between efficiency, M.A., and V.R.
A uniform metre scale is kept in equilibrium when supported at the 60 cm mark and a mass M is suspended from the 90 cm mark as shown in the figure. State with reasons, whether the weight of the scale is greater than, less than or equal to the weight of mass M.
Classify the following as a lever, a pulley and an inclined plane:
An opener
