Advertisements
Advertisements
Question
What is a machine?
Solution
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.
APPEARS IN
RELATED QUESTIONS
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.
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.
Draw a diagram to show how a single pulley can be used so as to have its ideal M.A= 2.
State the incorrect statement:
A force of 5 kgf is required to cut a metal sheet. A pair of shears used for cutting the metal sheet has its blades 5 cm long, while its handles is 10 cm long. What effort is needed to cut the sheet?
‘The force needed to push a load up an inclined plane is less than the force needed to lift it directly’ Give a reason.
Give an example for each of the following uses of a machine:
to obtain gain in force,
Work is the application of a ....... through a distance.
Stat the principle of an ideal machine.
Complete the following sentence :
Mechanical advantage = ___________ × velocity ratio
