For a simple gear train with six different-sized

For a simple gear train with six different-sized

Subject: Physics / General Physics
Question
For a simple gear train with six different-sized gears, with gear 1 as the input gear and gear 6 as the output gear, which gears must be considered when finding the velocity and torque ratios? A.All six gears

B.Only the second, fourth, and sixth gears

C.Only the first, third, and fifth gears

D.Only the first and sixth gears

A girl who weighs 490 N sits on one side of a see-saw, 5 m away from the center. Her friend sits on the other side, 3 m away from the center. If the see-saw is balanced, what is the mass of her friend? A.30.0 kg

B.83.3 kg

C.2450 kg

D.816.7 kg

A rider uses 200 N of force to keep a bicycle moving at a constant speed of 8 m?s. What is the total work done after 20 s? A.25 kJ

B.1600 kJ

C.10 kJ

D.32 kJ

A 200 ft * lb/s power source is connected to a fan with an angular velocity of 80 rad/s. What is the torque of the fan?

A.0.4 ft*lb

B.16000 ft*lb

C.2.5 ft*lb

D.120 ft*lb

A gear with an infinite gear diameter is called what kind of gear? A.Spur gear

B.Helical gear

C.Rack gear

D.Bevel gear

An apple falling from a tree is ________. A.not gaining or losing any kinds of energy

B.loses gravitational potential energy, but gains elastic potential energy

C.losing gravitational potential energy and gaining kinetic energy

D.gaining both gravitational potential and kinetic energy