Asked by Lauren
A 2302 kg block of granite is pulled up an incline that has an angle of inclination of 17.0 o with a constant speed of 2.22 m/s by a steam winch (see Figure). The coefficient of kinetic friction between the block and the incline is 0.340. How much power must be supplied by the winch?
Answers
Answered by
Chris
Power is Work/Time, or Force*Distance/Time.
You have a velocity, which is Distance over time, so you need to find the force that the winch needs to pull the block upwards. That force is the frictional force (coefficient of friction* normal force) + the force of gravity down the ramp.
After you get the force, times it by the velocity to get the power.
You have a velocity, which is Distance over time, so you need to find the force that the winch needs to pull the block upwards. That force is the frictional force (coefficient of friction* normal force) + the force of gravity down the ramp.
After you get the force, times it by the velocity to get the power.
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