1. Pushing a Bor Two workers are sliding a 300 kg crate across the floor. One worker pushes forward on the crate with a force of 380 N while the other pulls in the same direction with a force of 350 N using a rope connected to the crate. Both forces are horizontal, and the crate slides with a constant speed. What is the crate's coefficient of kinetic friction on the floor?

College Physics
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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1. Pushing a Bor
Two workers are sliding a 300 kg crate across the floor. One worker pushes forward on
the crate with a force of 380 N while the other pulls in the same direction with a force
of 350 N using a rope connected to the crate. Both forces are horizontal, and the crate
slides with a constant speed. What is the crate's coefficient of kinetic friction on the
floor?
2. Fun Friction Problem
A 4000 kg truck is parked on a 7.0 slope. Calculate the frictional force on the truck.
3. Rolling Friction
The rolling resistance for steel on steel is a paltry = 0.002. How long would it take a
500,000 kg train to come to a stop if it was originally rolling at 10 m/s?
Transcribed Image Text:1. Pushing a Bor Two workers are sliding a 300 kg crate across the floor. One worker pushes forward on the crate with a force of 380 N while the other pulls in the same direction with a force of 350 N using a rope connected to the crate. Both forces are horizontal, and the crate slides with a constant speed. What is the crate's coefficient of kinetic friction on the floor? 2. Fun Friction Problem A 4000 kg truck is parked on a 7.0 slope. Calculate the frictional force on the truck. 3. Rolling Friction The rolling resistance for steel on steel is a paltry = 0.002. How long would it take a 500,000 kg train to come to a stop if it was originally rolling at 10 m/s?
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