A 12 kg box is pulled to the right by a 350 N force that is 30 degrees above the horizontal. A constant frictional force of 120 N opposes it. What is the net horizontal force acting on the box?

c

explanation:

object 2 because all the other ones are wrong

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft

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