Question

how is the lever used in modern society?

a. its used in astronomy to track the path of the stars.
b. its used in construction to lift weights.
c. its used in the medical field to perform surgeries.
d. its used in literary courses to explain difficult ideas.
e. its used in large cities to transport water to villages.

Explanation:

A lever is a simple machine that helps lift or move loads. In construction, cranes (which use lever - like principles) are used to lift heavy weights.

• Option A: Astronomy for tracking stars is not a common use of levers. Telescopes (based on optics) are used for tracking stars, not levers.
• Option C: While some medical tools might have simple machine principles, levers are not typically used for surgeries in the way described. Surgical tools are more specialized (e.g., scalpels for cutting).
• Option D: Literary courses use literary devices (metaphors, similes) to explain ideas, not levers.
• Option E: Transporting water is usually done through pipes (using principles of fluid mechanics, pressure) rather than levers.

Answer:

B. It's used in construction to lift weights.