Posted by **sushil** on Monday, July 22, 2013 at 12:12pm.

the power developed by a man in riding up a 6 percent grade a ta constant speed is 200 W. the man and his bicycle have acombind mass of 80kg.determine the speed of riding.

- Dynamics -
**MathMate**, Monday, July 22, 2013 at 2:22pm
gradient = rise/run = 0.06

At 1m/s (horizontal distance), the bike and the rider (mass=80 kg) gains potential energy of mgh

= 80*9.81*(1m/s * 0.06)

= 47.88 W

Therefore speed (in the horizontal direction)

= 200/47.88 m/s (horiz.)

= 4.2474 m/s (horiz.)

= 4.2474*(1.0018) m/s (on slope)

= 4.255 m/s (on slope)

## Answer This Question

## Related Questions

- Dynamics - The power developed by a man in riding up a 6 percent grade at a ...
- dynamics - the power developed by a man in riding up a 6percent grade at a ...
- dynamics - the power developed by a man in riding up a 6 percent grade at a ...
- Karnataka state university - A baThe power developed by a man in riding up a 6 ...
- physics....need help! - An 80 kg man is riding in an elevator from the first ...
- PHYSICS!!!! - An 80 kg man is riding in an elevator from the first floor to the ...
- Physics - An 80 kg man is riding in an elevator from the first floor to the 34th...
- pysics - one friend is riding his bicycle at the speed of 10m/sec and another ...
- Physics - A standard man uses a bicycle of mass 30 kg to travel at constant ...
- science - The graph below shows your speed at different times while riding a ...

More Related Questions