Nail tips exert tremendous pressures when they are hit by hammers because they exert a large force over a small area. A 50% Part (a) What force, in newtons, must be exerted on a nail with a circular tip of a diameter 0.95 mm to create a pressure of 2.85 x 10°N/m2? (This high pressure is possible because the hammer striking the nail is brought to rest in such a short distance.) Grade Summary F= Deductions Potential 100% 0% sin cos tan cotan asino acos atan acotan sinh cosh tanh) cotanh Degrees o Radians л ( 7 8 9 HOME E 4 5 6 1 2 3 + 0 END VO BACKSPACE CLEAR Submissions Attempts aining: 10 (0% per attempt) detailed view Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. A 50% Part (b) How many people of mass 68 kg would have to stand on this nail to exert this force? Round to the nearest integer.
