Step-by-step explanation:
Given that,
Mass of the hamster, m = 0.139 kg
Diameter of the wheel, d = 20.8 cm
Radius, r = 10.4 m
Frequency of the wheel, f = 1 Hz
Time, t = 0.823 s
(a) There exist a relationship between the tangential and angular acceleration of the wheel. It is given by :

Since,





(b) In radial direction, applying the second law of motion as :

a is the radial acceleration,









Hence, this is the required solution.