Select the correct answer.
Mary pushes a crate by applying force of 18 newtons. Unable to push it alone, she gets help from her friend, Anne. Together they apply a force of
43 newtons, and the crate just starts moving. If the coefficient of static friction is 0.11, what is the value of the normal force?
OA. 2.0 x 102 newtons
OB.
2.6 x 10² newtons
O C.
O D.
OE.
3.9 x 10² newtons
4.0 x 10² newtons
4.3 x 10² newtons