Menu div.detail_box{padding: 20px;} div.question{min-height: 100px;padding:20px;text-align:left;size:14px;line-height: 16px; border: 1px solid #ccc;} div.question a{float: right; size: 16px; font-weight: bolder; margin-top: 10px;} div#table_checkbox_lesson span.table_chechbox {width: 200px !important;} div.title div.notes{ font-family:sans-serif, Arial; font-size: 18px; } a.print{float: right; margin-right: 40px;} 1. Three children are trying to balance on a seesaw, which has a pivot at the center, and a very light board 5.0\ m long. Two playmates are already on either end. Boy A has a mass of 50\ kg. and girl B a mass of 35\ kg. Where should girl C, whose mass is 25\ kg, place herself so as to balance the seesaw? View Detail ... 2. For the given wheel and axle, find the magnitude of F_(i n). View Detail ... 3. A block weight 900\ N was pulled up on an inclined plane with a force of 400\ N shown below. Assume the inclined plane is frictionless. a) What is IMA of this machine? b) Calculate the theoretical F_(i n). c) What is AMA of this machine? d) What is Mechanical efficiency of this machine? View Detail ... 4. A 30-cm-long and 5.0-cm-width wedge cut in a block with a force of 40\ N and produce 200\ N output force as shown. Find a) Ideal mechanical advantage (IMA)? b) The theoretical output Force? d) Actual mechanical advantage (AMA)? e) Efficiency? View Detail ... 5. A jackscrew with a handle 30.0 cm long is used to lift a car sitting on the jack. The car raised 2.0 cm with every full turn of the handle. What is the ideal mechanical advantage of the jack? View Detail ... 6. The following pulley system made of 3 massless pulleys, and the load weight W = 300\ N. a) What is the IMA of this system? b) Find magnitude of tension T1,T2, T3, T4, T5 and T6. View Detail ... 7. Following graph is the chain gear system of a bicycle. The crank Rc = 20.0\ cm, R_1 = 10.0\ cm, R_2 = 5.00\ cm and R_w = 30.0 cm. If F_(i n) = 500\ N a) Find tension T on the chain? b) If the total mass of biker and bicycle is 100\ kg. What is the the acceleration of the bicycle? View Detail ...