- ZOOM 5.1 Consider the situation illustrated in Figure 5.1. The inclined plane makes an angle o = 30 with the horizontal. The mass ratio m2/m1 = 2/3. The coefficient of kinetic friction between the body mi and the inclined plane is # = 0.1. The masses of the pulley and the thread are negligible. Calculate the magnitude and direction of the acceleration of body m2. Assume that g = 10 ms 2. [25] Figure 5.1 5.2 A small body of mass m was at rest on a frictionless horizontal surface. At time t = 0, a time varying force F(t) = bt is applied on the body, where b is a constant. The direction of the force forms a constant angle o with the horizontal (see figure 1). The acceleration due to gravity is given by g. Figure 5.2 (a) Draw a free-body diagram of the entire system. [2] (b) Find the time (T) when the body breaks off the surface. (Hint: When the body breaks off the surface, the normal forces between the body and the surface become zero.) [3] (c) Determine the velocity (v) of the body as a function of time before it breaks off the surface, i.c., determine v(t) for t