Class Management Help HomeWork 11 Begin Date: 7/2/2018 12:01:00 AM -- Due Date:
ID: 1864253 • Letter: C
Question
Class Management Help HomeWork 11 Begin Date: 7/2/2018 12:01:00 AM -- Due Date: 7/31/2018 11:59:00 PM End Date: 8/1/2018 11:59:00 PM (10%) Problem 3: A woman of m1-59 kg stands on the ice. The contact area between her skate and the ice is A 0.0038 m Otheexpertta.com > ? 25% Part (a) Express the force that the person exerts on the ice, F, in terms of m and g. You do not need to include the force of the column of air above her Grade Summary Deductions Potential 100% Submissions Attempts remaining: 4 (5%per attempt) detailed view 0 Submit Hint Hints:-%-deduction per hint. Hints remaining: Feedback: 1%-deduction per feedback. 25% Part (b) Calculate the numerical value of F in N 25% Part (c) Express the pressure on the ice from the person P in terms of F and A ? 25% Part (d) Calculate the numerical value of P in Pa Fynert TAExplanation / Answer
A)
force exerted by person
F = mg
B)
force
F = 59*9.8 = 578.2 N
C)
pressure
P = F/A
D)
pressure
P = 578.2/0.0038 = 1.52*105 N