You have a bookshelf that is 1 ft deep and 5 ft high, and weighs 210 lb and weight shown below. You are examining the safety of your design. 30 Fpull 2 ft 210 lb 1 ft 2.5 ft 2.5 ft Image by Nathan Kramer CC-BY-SA 4.0 a) You have a bookshelf that is 1 ft deep and 5 ft high, and weighs 210 lb and weight shown below. You are examining the safety of your design. If a toddler were to pull on the bookshelf at a height of 2 ft and a downward angle of 30, what is the minimum pulling force that would be needed to tip over the bookshelf? (Assume the center of gravity is at the center of the bookcase, and assume no slipping occurs.) Type your answer, in pounds, into the box below. P> lb ((answer should be 60.62) b) A toddler were to pull on the bookshelf at a height of 2 ft and a downward angle of 30. What is the normal force that acts on the bookshelf when the minimum P for tipping is reached? Type your answer, in pounds, into the box below. N = 16 c) What would the static coefficient of friction need to be to have the shelf slide before it tips? Type your answer in the box below. us=