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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
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उत्तर
Nutcrackers – A lever
संबंधित प्रश्न
Answer the following.
What do you understand by a complex machine?
What do you understand by a simple machine?
State whether the mechanical advantage of an inclined plane is equal to 1, less than 2 or greater than 1?
The mechanical advantage of an inclined place is always:
(a) less than 1
(b) equal to 1
(c) greater than 1
(d) nothing can be said
Fig show a system of four pulleys. The upper two pulleys are fixed and the lower two are movable.
(i) Draw a string around the pulleys. Also show the place and direction in which the effort is applied.
(ii) What is the velocity ratio of the system?
(iii) What is the mechanical advantage of the system?
(iv) What assumption do you make in arriving at your answer in part (iii)?
Define Velocity Ratio
Give an example where a machine is used to obtain gain in speed.
What is the efficiency of a machine?
Classify the following as a lever, a pulley and an inclined plane:
A needle
Which machine will you use to do the following work? Write their type.
To cut vegetables.
