Homework Help: physics

Posted by Alexandria on Sunday, March 20, 2011 at 10:36pm.

A sledge loaded with bricks has a total mass of 18.9 kg and is pulled at constant speed by a rope inclined at 19.3° above the horizontal. The sledge moves a distance of 19.8 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. What is the tension on the rope?

physics - drwls, Monday, March 21, 2011 at 1:00am
The horizontal component of the tension in the rope, T cos 19.3, will equal the friction force, since the sledge is not accelerating.

Compute the friction force using the kinetic friction coefficient, making sure that you take into account the vertical component of the rope force, which reduces the normal and friction forces.

Then solve for T

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