Name a simple machine that changes the direction of a force.

Name a simple machine that changes the direction of a force.

• A. Wedge
• B. Lever
• C. Pulley
• D. Inclined plane

Answer: (B)

A lever changes the direction of a force by using a pivot, called a fulcrum. When you push down on one end, the lever pivots and the other end goes up, redirecting your effort into lifting the load. This redirect can also multiply your effort if the effort arm is longer than the load arm. That pivoting action is the key idea, and it’s why a lever is the best example for switching the direction of a force. For context, think of a seesaw or a crowbar—both work by turning a downward push into an upward lift. The other simple machines change work in different ways: an inclined plane makes it easier to move a load by spreading the effort over a longer distance, a wedge splits forces, and a pulley redirects a rope’s pull but uses a wheel to shift direction rather than pivoting about a fulcrum.

A lever changes the direction of a force by using a pivot, called a fulcrum. When you push down on one end, the lever pivots and the other end goes up, redirecting your effort into lifting the load. This redirect can also multiply your effort if the effort arm is longer than the load arm. That pivoting action is the key idea, and it’s why a lever is the best example for switching the direction of a force. For context, think of a seesaw or a crowbar—both work by turning a downward push into an upward lift. The other simple machines change work in different ways: an inclined plane makes it easier to move a load by spreading the effort over a longer distance, a wedge splits forces, and a pulley redirects a rope’s pull but uses a wheel to shift direction rather than pivoting about a fulcrum.