Advertisements
Advertisements
Question
Write the relation between mechanical advantage, velocity ratio and efficiency.
Solution
`"Efficiency" = "Mechanical advantage"/"Velocity ratio"`
APPEARS IN
RELATED QUESTIONS
What do you understand by a machine?
A machine is 75% efficient’. What do you understand by this statement?
Answer the following in short.
Mention any two methods by which we can take care of machines.
Define Efficiency
What is the efficiency of an ideal machine?
What is the efficiency of a machine?
A cook used a ‘fire tong pair’ of length 32 cm. to lift a piece of burning coal of mass 500 g. If he applies his effort at a distance of 8 cm from the fulcrum, what is his effort? Assume friction etc. to be absent. Also, obtain values of the M.A. and the V.R. of this ‘machine’.
Classify the following as a lever, a pulley and an inclined plane:
A wedge
Which machine will you use to do the following work? Write their type.
To cut vegetables.
What is a lever? How are the orders of the lever determined?
