NEW
Font size
WorksheetsSimple Machines
Total questions: 10
Worksheet time: 11mins
Mechanical advantage of a machine is
Load/ Effort
Effort/Load
Effort- load
Load x effort
Mhanical advantage of single movable fixed Pulley is
1
2
3
4
A woman draws water from a well using fixed pulley. The mass of the bucket and water together is 6 kg. The force applied by the woman is 67 N. The mechanical advantage will be
1.85
1.12
0.857
2.16
A pulley system has three pulleys. A load of 240 N is overcome by applying an effort of 100 N. Calculate the MA of the system.
2.4
2
4.2
none.
A pulley system has three pulleys. A load of 240 N is overcome by applying an effort of 100 N. Calculate the efficiency of the system.
84 %
90 %
86 %
80%
Name the machine used to change the direction of the effort?
Fixed pulley
Movable pulley
both
none.
A single movable is preferred over single fixed pulley, because
4
3
2
1
Movable pulley is used as a ___
Speed multiplier
Force multiplier
Energy multiplier
none.
When a machine used as a force multiplier?
Effort = Load
effort > load
effort < load
none
The relationship between MA, VR of an ideal machine is
MA= VR
MA < VR
MA > VR
none.
