You want to climb to the top of a 2.0 m high wall using a ramp. You have a choice of several arrangements for the ramp regarding the length and the angle. Which one of these arrangements would you choose in order to climb to the top with the least "energy consumption in time" (power)?
A)2.8 m at 45°
B)4.0 m at 30°
C)11.5 m at 10°
D)The length makes no difference.

Question

Quizplus · Accepted Answer

A longer ramp with a smaller angle (11.5 m at 10°) requires less force to climb, reducing the power needed over time, thus minimizing energy consumption.

You Want to Climb to the Top of a 2