Inclined Planes

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.
• Many objects are difficult to lift straight up.
• Heavy object usually take up more space.

Tags

NGSS.MS-PS2-2

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.

Tags

NGSS.MS-PS2-2

An inclined plane reduces the amount of force needed to move an object by - 

• increasing the distance the object moves.
• transferring more of the force to the object
• reversing the direction the object is moved.

Which of the following decreases when an object is moved using an inclined plane?

• The distance the object moves.
• The pull of gravity on the object.
• The force needed to move the object.
• The amount of space the object occupies.

Tags

NGSS.MS-PS2-2

What does an inclined plane look like from the side?

• square

• rectangle

• triangle

• circle

The longer the inclined plane, the ___________________ to move the object

• the less input force you need
• the more input force you need
• the more output force you need
• the less output force you need

Tags

NGSS.MS-PS2-2

Which has the longer distance - straight lift from the ground directly to the back of truck or using an inclined plane?

• Straight lift
• Inclined plane
• They are the same

Tags

NGSS.3-5-ETS1-1

NGSS.3-5-ETS1-2

NGSS.3-PS2-1

The illustraction shows a wooden block being pulled up an inclined plane with a spring scale. What change in the experimental setup would require more force to pull the block up the inclined plane?

• Using a much longer inclined plane.

• Pulling the wooden block more quickly.

• Reducing the mass of the wooden block.

• Increasing the height of the inclined plane.

The diagram shows an investigation in a science classroom. Students pull the same mass up an inclined plane propped up on five blocks, then six, seven, and eight blocks. Each time they use a spring scale to measure the force needed to pull the mass up the inclined plane. This investigation can show how which of the following affects the force needed to move an object up an inclined plane?

• The mass of the object.

• The height of the inclined plane.

• The length of the inclined plane.

• The surface area of the object.

Which of the following will require the least force to move the load up the inclined plane?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2