A person exerts a horizontal force of f 169n in the test, Ask an Expert

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Q1. A person exerts a horizontal force of F = 169N in the test apparatus. (h = 0.32m.) Find the horizontal force M that his flexor muscle exerts on his fore arm.

Q2. A hunter wishes to cross a river that is 2.5 km wide and flows with a speed of 5 km/h parallel to its banks. The hunter uses a small powerboat that moves at the maximum speed of 15km/h with respect to the water. What is a minimum time necessary for crossing?

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