Question

Mechanics use a pulley to lift an engine out of a car. How could they make the pulley more efficient?(1 point)
Responses

clean and oil the pulley’s axle
clean and oil the pulley’s axle

lower the pulley’s wheel
lower the pulley’s wheel

raise the pulley’s wheel
raise the pulley’s wheel

use a longer rope or cable

Answer 1

clean and oil the pulley’s axle — reducing friction at the axle increases the pulley’s mechanical efficiency.