A particle of mass m moves with negligible friction on a horizontal surface and is connected to a light spring fastened at O. At position A the particle has the velocity v A = 4 m / s vA=4 m/s. Determine the velocity vB of the particle as it passes position B.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

that would be because of both gravity and friction. so     c

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