VG-Force & Moti

The diagram provided shows a fixed pulley system.A fixed pulley does not change the amount of effort needed to lift the load, but it does change the 

• direction of the force.
• weight of the load.
• volume of the force.
• shape of the load.

The diagram shows a wooden block being pulled up an inclined plane that is 30 cm in height.Using the inclined plane reduces the amount of force needed to lift the block, while increasing the —

• mass of the wooden block.
• surface area of the block.
• pull of gravity on the block.
• distance the block must move.

Which of the following decreases when an object is lifted using a movable pulley?

• The distance the object moved
• The amount of force needed
• The length of the pulley’s rope
• The pull of gravity on the object

The advantage of using an inclined plane is to reduce the —

• 
  force needed to lift the heavy objects.
• time needed to load many objects.
• work being done while moving objects.
• amount of friction affecting the objects.

The diagram provided shows a 50 N load attached to a movable pulley.What amount of force must act on the left rope of the pulley in order to lift the load?

• Less than 25 N
• 25 N
• 50 N
• More than 50 N

The illustration 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

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 objects usually take up more space.

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

The diagram shows a 225 N load attached to a movable pulley. What amount of force is required to lift the load? Record your answer on the grid below.

• 0.1125N
• 112.5N
• 11.25N
• 1.125N

The diagram shows a movable pulley system. When moving a load, this pulley system changes the —

• direction of the force.
• amount of force needed.
• pull of gravity on the load.
• overall mass of the rope.