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प्रश्न
What is a machine?
उत्तर
A machine is a device by which we can overcome resistance by applying a comparatively small force at a convenient point and in the desired direction or obtain a gain in speed.
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संबंधित प्रश्न
With reference to the terms Mechanical Advantage, Velocity Ratio and efficiency of a machine, name and define the term that will not change for the machine of a given design.
A scissor is a _________ multiplier
Two forces each of 5N act vertically upwards and downwards respectively on the two ends of a uniform metre rule which is placed at its mid-point as shown in the diagram. Determine the magnitude of the resultant moment of these forces about the midpoint.
Name a machine to change the point of application of force ?
State the incorrect statement:
‘The force needed to push a load up an inclined plane is less than the force needed to lift it directly’ Give a reason.
What is the purpose of a machine?
Complete the following sentence :
Mechanical advantage = ___________ × velocity ratio
Under what condition will a set of gears produce a gain in speed
Name a machine which can be used to multiply force and change the direction of force applied.
