What term describes a sloping surface that reduces the amount of force needed to do work?

What term describes a sloping surface that reduces the amount of force needed to do work?

• A. Inclined Plane
• B. Wedge
• C. Screw
• D. Compound Machine

Answer: (A)

An inclined plane is a sloping surface that lets you do the same amount of work with less force by spreading the effort over a longer distance. By pushing or pulling along the slope, you apply less instantaneous force, though you move the load a greater distance. The trade-off is captured by the mechanical advantage, which roughly equals the length of the slope divided by the height it rises. Real ramps have friction, so you’ll still feel some resistance, but the principle holds: the incline plane lowers the required force to lift or move a load. The other terms describe different devices: a wedge is two inclined planes used to split material; a screw is an inclined plane wrapped around a cylinder that converts rotational to linear motion; a compound machine combines two or more simple machines.

An inclined plane is a sloping surface that lets you do the same amount of work with less force by spreading the effort over a longer distance. By pushing or pulling along the slope, you apply less instantaneous force, though you move the load a greater distance. The trade-off is captured by the mechanical advantage, which roughly equals the length of the slope divided by the height it rises. Real ramps have friction, so you’ll still feel some resistance, but the principle holds: the incline plane lowers the required force to lift or move a load. The other terms describe different devices: a wedge is two inclined planes used to split material; a screw is an inclined plane wrapped around a cylinder that converts rotational to linear motion; a compound machine combines two or more simple machines.