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- Co FIG. P4.2 TP4. Rod under water One end of a rod of length L and density p is fixed by a frictionless pivot at a depth L d under water. Determine the equilibrium positions of the rod in terms of its an- gle a measured from the vertical, and the investi- gate whether the equilib- rium positions are stable or unstable, given that (a) p= 500 kg/m³; The density of water is Pw (b) p= 853 kg/m³. = 1000 kg/m³.)Solve the reaction forces.
- Find the horizontal force , P required to turn the wheel weighing 500 over the block 10cm high if radius of the wheel is 25 cmHode Resultant, moment, Equilibrium R. Find the ventical componcut For the system shown in Ria.t AF (Fig.L) Fx=86 N find the moment of force(looN) a bout peint (A) and (B) as shown in fiq, 2. Br. 10ON 3m O De termine the magnitude and divection of force (f) fon the equilibnium system shown I'n fig.3. 200N 49 500M 60 10Three smooth cylinders, each weighing 500 N, is placed inside a smooth box as shown in the figure. B 3.2 Solve for the reaction at B.
- A lift (elevator) in a tall building is operated by an electric motor as shown inFigure QB3. The lift car is suspended from a cable that is wrapped around thesheave. The other end of the cable supports a counter-weight.The sheave has a diameter of 550 mm. The counter-weight has a mass of 1750kg and the combined mass of the lift car and passengers is 2000 kg. Theefficiency of the motor is 90%. Air resistance and friction between the cable andthe sheave should be ignored. When the lift car is being raised at a constantspeed of 2.50 m/s, determine the torque generated by the motor answer: 750NmA lift (elevator) in a tall building is operated by an electric motor as shown inFigure QB3. The lift car is suspended from a cable that is wrapped around thesheave. The other end of the cable supports a counter-weight.The sheave has a diameter of 550 mm. The counter-weight has a mass of 1750kg and the combined mass of the lift car and passengers is 2000 kg. Theefficiency of the motor is 90%. Air resistance and friction between the cable andthe sheave should be ignored. When the lift car is being raised at a constantspeed of 2.50 m/s, determinei.) The angular velocity of the sheave[25%]ii.) The power output of the motor[25%]iii.) The power input to the motor[25%]iv.) The torque generated by the motor[25%]Hows Resultant, moment, Equilibrium . Find the ventical componcut For the system shown in Rig.t AF (Fig.l) Fメ-86N find the moment of force(looN) a bout pernt (A) and (B) as shown in fiq, 2. Br. 10ON 3m ODe termine the magnitude and divection of force (f) fon the equilibnium system shown I'n fig.3. 200N 49 500N 60 10