K.C.S.E Physics Q & A - MODEL 2014PP1QN16
​Figure 10 shows a trolley of weight 20 N pulled by a force of 4 N from the bottom to the top of an inclined plane at a uniform speed.
​(a) (i) State the value of the force acting downwards along the inclined plane.
(ii) Explain how the value in part (a) (i) is obtained. (b) For the system. determine the: (i) mechanical advantage; (ii) velocity ratio; (iii) efficiency.
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