The you Place them why? ? ii. With six coins still on the left, three coins are put on the right at mark 4. Where on the right should you pile an addition of six coins to get a balance? b. A crowbar used for turning a stone is shown in the diagram. In which direc or B) is the pivot to be shifted to increase the mechanical advantage? Write load reason. umerical Problems A load of 680 N is lifted from A to C by 500 N force on an inclined plane as shown in the diagram. Study the diagram and calculate: i Output 500N​

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.