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- A driver pulley of diameter 6.50 in. revolves at 1650 rpm. Find the speed of the driven pulley if its diameter is 26.0 in. Show Work
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- A driver gear has 36 teeth and makes 85.0 rpm. Find the rpm of the driven gear with 72 teeth. Show Work9. A driven gear of 80 teeth makes 70.0 revolutions per minute. The driver gear makes 100.0 rpm. What is the number of teeth required for the driver gear? Show workA motor turning at 1500 rpm is fitted with a gear having 60 teeth. Find the speed of the driven gear if it has 40 teeth. Show Work
- 6. For pulleys, the ideal mechanical advantage is the number of supporting strands. a. What is the IMA of the pulley system shown to the right? b. If the system is used to lift a 500N weight, how much force would you need to apply? c. If you wanted to lift the mass 10 m, how much rope would you need to pull through your hands? d. Calculate the input work.26. You are using a screwdriver to screw in a screw that has a pitch of 3 cm. The screwdriver has a handle radius of 10 ст. If the efficiency is 35%, how much effort (applied) a. force is needed to overcome a resistance force of 40 N? b. What is the reason for low efficiency of the screw? Where does the energy go?A lever has an input arm 50 cm long andan output arm 20 cm long.a. What is the mechanical advantage of thelever?b. If the input force is 100 N, what is the outputforce?
- A male subject who weighs 185 lbs. performs a Wingate Test and achieves the following results: a. 0-5 sec 14 RPM b. 6-10 sec 13 RPM c. 11-15 sec 9 RPM d. 16-20 sec 6 RPM e. 21 - 25 sec 5 RPM f. 26 - 30 sec 4 RPM Please calculate Work per interval, Total Work, Total Power, Peak Power, and Power Drop-Off. Show your work.Two – pulleys belt drive-system is commonly used in washing machines as shown in Figure.1. Your role in a company that manufactures washing machine is to analyze the power transmission through the belt drive system which operates under uniform angular acceleration in such a manner that ensures the required torque and power output are optimum. The system under study includes two pulleys and one belt with the following design specifications: The driver pully rotates at angular velocity win = 1700 rpm. - The driver pully input torque is Tin = 20 N.m. - The driver pully has a diameter of 100 mm. - The driven pully has a diameter of 220 mm. The system operates for long period under uniform angular speed, - Power transmission operates under no slipping condition. 220 mm |Belt 100 mm W= 1700 rpm in out T= 20 N.m T in out P in Pat Driver pulley Driven pulley Figure.1(a) Belt drive system used in washing machinePitch of a 50 mm diameter threaded screw of a screw jack is 12.5 mm. The C.O.F. between the screw and nut is 0.13. Determine the torque required on the screw to raise a load of 27 kN assuming load to be rotating with screw. Determine the ratio of the torque required to raise to lower the load and also the efficiency of the machine.
- A typical car has an axle with 1.05 cm radius driving a tire with a radius of 31.8 cm. What is its mechanical advantage assuming the very simplified model in the figure below? F. Additional Materials O ReadingThe total length of a first class lever is 9.0 ft. This is used to move a load of 390 lbs, as pictured below. How much effort must be applied? 18 in Your Answer: Answer1. An inclined plane as shown in figure 1 is used to raise an object of mass 30 kg. If the plane is inclined 5° above the horizontal and the coefficient of friction is 0.20, calculate the ideal mechanical advantage, actual mechanical advantage, and the efficiency of this machine. 2. The pitch of a jackscrew shown in figure 2 is 0.3 cm and has a lever arm of 60 cm length. What force at the end of the lever arm will raise a load of 190 kg if the efficiency of the machine is 12 %? 3. The IMA of the pulley system shown in figure 3 is 4, how far must the applied force move if the load moves 1 ft? If the load weighs 200 lb and the efficiency of the system is 90 %, what must be the applied force? 4. A pulley system as shown in figure 4 has an ideal mechanical advantage of 5 and is used to lift a load of 1000 lb. If the effort moves 10 ft, how far does the load move? If this work was done in 15 s, what horsepower was developed? If the machine was 80 % efficient, how much effort would be needed…