Indiana Jones needs to ascend a 10 m high building. There is a large hose filter with pressurized water hanging down from the building top. He builds a square platform and mounts for 4 cm diameter nozzles pointing down at each corner. By connecting hose branches, a water jet with 15m/s velocity can be produced from each nozzle. Jones the platform and the nozzles have a combined mass of 150 kg.
