Simple Machine Wedges Quiz

James is using a wedge to split a piece of wood. What is the efficiency of the wedge used by James?

• The efficiency of a wedge is the ratio of the output force to the input force divided by 100%.

• The efficiency of a wedge is the ratio of the input force to the output force multiplied by 100%.

• The efficiency of a wedge is the ratio of the output force to the input force.

• The efficiency of a wedge is the ratio of the output force to the input force multiplied by 100%.

Which of the following statements is true about the efficiency of wedges?

• Wedges are inefficient because they only allow force to be applied over a small distance.

• Wedges are inefficient because they require more force to be applied over a larger distance.

• Wedges are efficient because they allow force to be applied over a larger distance.

• Wedges have no effect on efficiency because they only change the direction of force.

What is the formula to calculate the efficiency of a wedge?

• Output force / Input force * 100

• Output force * Input force * 100

• Output force - Input force * 100

• Output force + Input force * 100

A wedge is considered efficient if its efficiency is:

• Reducing the force needed to do work

• Increasing the force needed to do work

• Having no effect on the force needed to do work

• Increasing the distance over which the force is applied

Which of the following factors affect the efficiency of a wedge?

• Angle of the wedge and friction between the wedge and the object being split.

• Color of the wedge and size of the object being split.

• Material of the wedge and temperature of the object being split.

• Shape of the wedge and weight of the object being split.

What happens to the efficiency of a wedge if the angle of the wedge increases?

• Becomes more efficient

• Stays the same

• Increases

• Decreases

What is the ideal angle for a wedge to achieve maximum efficiency?

• 45 degrees

• 30 degrees

• 60 degrees

• 90 degrees

Which of the following is an example of a wedge?

• Screwdriver

• Axe

• Pliers

• Hammer

What is the mechanical advantage of a wedge?

• Ratio of thickness to width

• Ratio of width to length

• Ratio of length of sloping side to thickness

• Ratio of height to length

Which of the following is not a type of wedge?

• Lever

• Inclined plane

• Pulley

• Screw