Answer Happy

1.2. A winch is used to pull a small boat up a slipway as shown in the figure below. The boat has a mass of 15 tonnes and is accelerated to the top of the slope, from a stationary start, to a Velocity of 1.2 m/s in 45 s. The slope is 22° to the horizontal and the coefficient of friction between the slipway and the boat can be taken as 0.3. Winch a. Draw a free body diagram for the boat and include with dotted lines, the components of the weight of the boat along and perpendicular to the incline. Mo mass of the boat - 15 tonnes T= tention force (in string) az acceleration of the boat N- Normal force fe friction force My > Mg Cose = Mg Cos 22 gegravitional acceleratie FF ng sino b. Determine the tractive effort of the winch. = masin 22

C. Determine the work done by the traction force in climbing the supway. d. Determine the average power developed to winch the block up the slope.