On 14 Mar, 13:15, Bob Cook wrote:

To beter understand how the lift gets less as the climb angle gets
greater, let's look at teh "extreme". Consider a glider attached by a
nose hook to a huge construction crane. *The crane operator *applies POWER
to the lifting cable and the glider is slowly lifted, vertically into the
air.

Bad example, since tow planes pull - give or take a wee bit -
horizontally, regardless of climb angle.

Ian