Two people try to lift a 60-kg crate. One person applies 285 N of force upward while the other person applies 375 N of upward force.

a. What is the net force on the crate? (Use the steps we covered in class to find Fx and then find a.)
b. What is the acceleration of the crate?

does anyone know or what?

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

snell's law

refractve index = sin incidence / sin refraction