Solar cells outputs about 120W per square meter. For an area of an A4 paper, the power is about 7.5W. This is when the sunlight is bright enough, as in afternoon, and the cells oriented at a correct angle.

Computer optical drive spindle motor has roughly that much of power, 10W. That motor can spin a CD/DVD to about 12000rpm.
Another comparison is two NiMH AA batteries can supply 7.5W for about 35 minutes.

Lifting 5kg up 10m needs 490J of energy. At a rate of 7.5W, it needs slightly more than one minute. And this haven't taken efficiency into account. But can estimate in the end, it takes about two minutes.