Work Sleigh Problem: Calculating Horse Work & Power

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SUMMARY

The discussion centers on calculating the work done by a horse pulling a 120.0 kg sleigh over a distance of 0.750 km on a level snowy surface with a coefficient of kinetic friction of 0.250. The work done by the horse can be determined using the formula for work, W = F × d, where F is the force exerted to overcome friction. For part B, the power required from the horse to complete the trip in 10.0 minutes is calculated using the formula for power, P = W/t, where t is the time in seconds.

PREREQUISITES
  • Understanding of Newton's laws of motion, particularly Newton's first law.
  • Familiarity with the concepts of work and power in physics.
  • Knowledge of calculating frictional force using the coefficient of kinetic friction.
  • Ability to convert units, specifically time from minutes to seconds.
NEXT STEPS
  • Learn how to calculate frictional force using the formula F_friction = μ × N, where μ is the coefficient of friction and N is the normal force.
  • Study the relationship between work, force, and distance in various contexts.
  • Explore the concept of power in physics, including its units and applications.
  • Investigate real-world applications of work and power calculations in mechanical systems.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of work and power in mechanical contexts.

celcon
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A sleigh of mass 120.0kg is pulled by one horse at a constant velocity for a distance of .750 km on a level snowy surface. the coefficient of kinetic friction between the sleigh runners and the snow is 0.250. A) what is the work done by the horse? B) what power must the horse deliver to the sliegh for the trip to take 10.0 mins?

Could someone point me in the right direction on this one?
I am lost

Anyone that can help please let me know I also have some other problems
 
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OK, please post 'em separately and welcome to the Forums. What is the formula for work in terms of the force applied by the horse and the distance over which it acts? If the horse moves at constant speed, what must be its force against friction in light of Newton 1?
 
And for part B, remember that power is merely work/time
 

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