For medical reasons, astronauts in outer space must deter-mine their body mass at regular intervals. Devise a scheme for measuring body mass in an apparently weightless environment.

Solution 5DQ Step 1: We know that, the time period of oscillation of a spring which is fixed at one end and attached to a mass m at the other end, T = 2 k Where, m = mass of the object k = Spring constant of the spring We know that, F = - kx, according to the Hooke’s law Therefore, k = -F/x