The ideal mechanical advantage of lever in which the effort arm is 50 cm and load arm is 5 is
10
5
6
7
The opposing force to be overcome by a machine is:
Effort
Load
Fulcrum
Both a and b
Which type of lever is this?
Class I
Class II
Class III
Nothing can said
For the above equation find the work done by the falling mass in its displacement by 8 m.
5000 J
1000 J
8000 J
2000 J
Foot treadle and sugar tongs are examples for:
Class I lever
Class II lever
Class III lever
Class I & II lever
The correct relationship between the mechanical advantage (MA) the velocity ratio (VR) and the efficiency is
None of these
The lever for which the mechanical advantage is less than 1 has:
fulcrum at mid point between load and effort
load between effort and fulcrum
effort between fulcrum and load
load and effort acting at the same point
Class II levers are designed to have:
MA = VR
MA > VR
MA > 1
MA < 1
The mechanical advantage of Class III lever is always:
less than 1
greater than 1
1
A movable pulley is used as:
force multiplier
speed multiplier
device to change the direction of effort
all the above
