A 10 newton effort force is required to lift a 10kg box, Ask an Expert

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Q1. A 10 Newton effort force is required to lift a 10kg box just off the ground. What is the effort required to lift the box off the ground using a 3m long lever? [The fulcrum is placed 0.5m from the box.]

Q2. Water flowing throughout a garden hose of diameter 2.73 cm fills a 20.0 L bucket in 1.40 min.

(a) What is the speed of the water leaving the end of hose?

(b) A nozzle is at present attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle?

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