Question

A person with compromised pinch strength in his fingers can exert a force of only 7.0 N to either side of a pinch-held object, such as the book shown in the following figure.(Figure 1) Figure1 of 1An image shows a person holding a book vertically by pinching the sides with the thumb and index finger. An image shows a person holding a book vertically by pinching the sides with the thumb and index finger.

Part A What is the largest weight of the book he can hold vertically before it slips out of his fingers? The coefficient of static friction between his fingers and the book cover is 0.86. Express your answer using two significant figures.

Answer 1