The handles of metal cutters are made long. Why?
The velocity ratio (VR) is always greater than mechanical advantage (MA) in a simple machine. Why?
It is easier to lift a load when it is shifted towards the wheel in a wheelbarrow. Why?
The value of mechanical advantage (MA) in the third class lever is always less than one. Why?
Can you increase the efficiency of a simple machine? How?
The efficiency of a simple machine is 60%. What do you mean by this statement?
In a lever, 120 N load is attached at a distance of 20 cm from the fulcrum. If this effort is used to lift 50 kg weight then, find
A crowbar is used to lift a load of 2400 N at a distance of 50 cm from the fulcrum. Calculate the effort required to balance the load at 90 cm from the fulcrum.
Calculate the mechanical advantage (MA), velocity ratio (VR), and efficiency (η) for the given lever.
What is the difference between the second class lever and third class lever?
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