A 2600 kg block of granite is pulled up an incline which is 36.87 degrees off of the horizontal at a constant speed of 1.07m/s by a cable and winch. The coefficient of kinetic friction between the block and the incline is 0.25. What is the power due to the force applied to the block by the cable?(adsbygoogle = window.adsbygoogle || []).push({});

I started this problem by finding the acceleration of the block which is sin(36.87) *9.81=5.88599m/s^2

This times the mass is the force pulling up. = 15303 N

Next i found the frictional force which is N * u

so cos(36.87) * 9.81 * 2600 * .25 = 5101 N

I subtracted the force pulling up by the frictional force and multiplied it by the velocity 15303-5101 = 10201 * 1.07 = 10916 W

where did i go wrong because this is not the answer. thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Power due to the force applied to the block by the cable?

**Physics Forums | Science Articles, Homework Help, Discussion**