SIMPLE MACHINES REVIEW
1.
The mechanical advantage of a machine means using the machine requires a smaller force to move an object.
2.
A pulley contains the simple machine wheel and axle.
3.
A single fixed pulley changes the direction of motion of an object.
4.
Pulleys help because you can change the direction of the force.
5.
For a single movable pulley, the input force is always less than the output force. It will have 2 support ropes.
6.
The amount of force needed to move an object is equal to the weight of the object.
7.
A pulley system with fixed and moveable pulleys with more support ropes has a larger mechanical advantage. The more
support ropes a pulley system has, the more of a mechanical advantage it has.
8.
A wedge, screw, and inclined plane are types of ramps.
9.
An inclined plane is a simple machine which requires less force. The disadvantage of an inclined plane is that the object
must be moved over a longer distance.
10. An inclined plane uses less force over a greater distance to decrease the amount of force needed to do work.
11. As the length of an inclined plane is increased, the force decreases.
12. A longer, less steep inclined plane requires less force.
13. If you combine pulleys and an inclined plane, you would have to use less force.
14. Work is not changed by a machine. A machine can make work easier by changing the amount of force you exert, the
distance over which you exert a force, and the direction in which you exert a force.
SIMPLE MACHINES REVIEW
1.
The mechanical advantage of a machine means using the machine requires a smaller force to move an object.
2.
A pulley contains the simple machine wheel and axle.
3.
A single fixed pulley changes the direction of motion of an object.
4.
Pulleys help because you can change the direction of the force.
5.
For a single movable pulley, the input force is always less than the output force. It will have 2 support ropes.
6.
The amount of force needed to move an object is equal to the weight of the object.
7.
A pulley system with fixed and moveable pulleys with more support ropes has a larger mechanical advantage. The more
support ropes a pulley system has, the more of a mechanical advantage it has.
8.
A wedge, screw, and inclined plane are types of ramps.
9.
An inclined plane is a simple machine which requires less force. The disadvantage of an incl ined plane is that the object
must be moved over a longer distance.
10. An inclined plane uses less force over a greater distance to decrease the amount of force needed to do work.
11. As the length of an inclined plane is increased, the force decreases.
12. A longer, less steep inclined plane requires less force.
13. If you combine pulleys and an inclined plane, you would have to use less force.
14. Work is not changed by a machine. A machine can make work easier by changing the amount of force you exert, the
distance over which you exert a force, and the direction in which you exert a force.