Why does high speed need less torque to keep the motorcycle moving?

February 22, 2010 by admin · 5 Comments
Filed under: Physics 
motorcycle
Tiger asked:


At high speed, we shift at higher gears which exert much less torque on to the wheel. Why does at high speed, we need less torque to keep the motorcycle moving?

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Why does high speed need less torque to keep the motorcycle moving?

February 20, 2010 by admin · 5 Comments
Filed under: Physics 
motorcycle
Tiger asked:

At high speed, we shift at higher gears which exert much less torque on to the wheel. Why does at high speed, we need less torque to keep the motorcycle moving?

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Motorcycle Power: related to the work and energy question?

February 4, 2010 by admin · 1 Comment
Filed under: Physics 
motorcycle
Marvin P asked:

A motorcycle and rider have a combined mass of 300 kg and are traveling at a steady velocity of 19 m/sec. The force of wind resistance acting the motorcycle and rider at this speed is 2.4 X 102N.
i already find out the power sustain on the ground, but i need to find
How power must the motorcycle produce to sustain this velocity on an upward incline of 39 degrees?

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How much force is exerted for circular motion on a motorcycle rider?

December 13, 2009 by admin · Leave a Comment
Filed under: Physics 
motorcycle
Cheetah asked:

What would be the force due to gravity on the motorcycle rider?
Together, both are 750 kg, and go through a 75 meter radius curve at 75 m/s. Wouldn’t the force just be the difference of the normal force and the force due to gravity, or do I have to use centripetal force?

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What is the smallest possible speed that the motorcycle and rider can have?

December 5, 2009 by admin · Leave a Comment
Filed under: Physics 
motorcycle
Kerin G asked:


A trick motorcyclist moves in a horizontal circle inside a large vertical drum which has a radius of 10m. If the coefficient of static friction between the tires and the drum is .60, what is the smallest possible speed that the motorcycle and rider can have?

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How fast must the motorcycle leave the cliff top to land on a level ground below?

November 17, 2009 by admin · 3 Comments
Filed under: Physics 
motorcycle
Nicholas asked:


A movie stunt driver on a motorcycle speeds horizontally off a 50.0 m high cliff. How fast must the motorcycle leave the cliff top to land on a level ground below, 90.0 m from the base of the cliff where the cameras are? Ignore air resistance.

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