Pick out the instrument which uses gears from the following .
Scissors
Screw driver
Forceps
Hand-drill
What are the two variables that determine the mechanical advantage of a simple machine?
Speed,Force
Force, Distance
Acceleration, Power
Power, Distance
Which of the following is not considered as a simple machine?
Wedge
Pulley
Lever
Wheel barrow
The mechanical advantage of an oar is 3.00. If the resistance force of the water is 35.0 N,what is the effort force exerted by the rower?
0.0857 N
11.7 N
105 N
32.0 N
The distance from (a) to (b) is 20 cm, the distance (a) to (c) is 80 cm, the mass at (b) is 1kg. What mass would have the block at (c)?
400 gm
250 gm
1000 gm
600 gm
Simple machine.
Tool that gives electricity to other machines.
A machine that does only one job.
Any tool that makes work easier.
A machine that is made up of many smaller parts.
Find the mechanical advantage of the screw jack having a pitch of 34.0mm and a handle radius of 52.0 cm
960
0.411
96 .0
411
You need to lift a piano to the third floor. Which simple machine would not work?
Inclined plane
The ratio of the work output to the work input is
Mechanical advantage
Efficiency
Work
Power
An automotive engineer realizes it will be difficult for drivers to turn a pick up truck with a steering wheel that has a radius of only 11.0 cm . What can the engineer do to increase the mechanical advantage of the steering wheel?
Shorten the axle length of the steering wheel
Decrease the radius of the steering wheel
Lengthen the axle length of steering wheel
Increase the radius of the steering wheel
