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Q1. A 2.50 syringe has the inner diameter of 5.0mm , the needle inner diameter of 0.28mm , and a plunger pad diameter (where you place your finger) of 1.20 cm . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. Presume the liquid is an ideal fluid. What is the minimum force nurse needs to apply to the syringe?

Q2. A uniform plank of length 5.40 m and weight 217 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 417 N walk on the overhanging part of the plank before it immediately begins to tip?

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