inclined planes ima

What is the formula to calculate the MA (mechanical advantage) ?

• MA= height/width

• MA= load/effort

• MA= R/R

• MA= output force/input force

Identify the type of pulley

• Fixed

• Moveable

• Block and Tackle or pulley system

Identify the type of pulley

• fixed

• moveable

• block and tackle or pulley system

What is a disadvantage of using an inclined plane to lift a heavy object?

• The object must be moved a greater distance.

• It takes less effort to move the object.

• The object must be moved a shorter distance.

• It takes more effort to move a heavy object.

Students pulled the same mass up an inclined plane that was 20 cm, 30 cm, and 40 cm long. Each time, they used a spring scale to measure the force needed to pull the mass up the inclined plane. What did they conclude?

• Less force was needed on the 20 cm plane
• More force was needed on the 40 cm inclined plane.
• The least amount of force was needed on the 40 cm inclined plane.
• The least amount of force was needed on the 30 cm inclined plane.

What is the effort force on this object required to move it?

(The original force without using a machine)

• 9.8 N

• 490 N

• 49 N

• 2.5 N

What is the Mechanical Advantage of this machine?

• 10

• 2.6

• 62

• 26

What is the effort force on this object required to move it?

(The original force without using a machine)

• 48 N

• 20 N

• 196  N

• 784 N

What is the Mechanical Advantage of this machine?

• 48

• 4

• 12

• 3

What is the reduced effort force on this object?

(Using the Machine)

• 14 N

• 306 N

• 30.6 N

• 2 N