A 36kg crate rest on a horizontal floor, and a 65kg person is standing on the crate. What is the normal force the floor exerts on the crate?
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The uniform crate shown in Figure Q2 has a mass of 150 kg. Determine whether 85 kg man can move the crate or not. Assume that the man exerts only a horizontal force. The coefficient of static friction between the crate and the floor is ๐๐ = 0.2, and the coefficient of friction between his shoes and the floor is ๐๐ โฒ= 0.4. Support your answer with the respective equations and free body diagrams.
A dockworker loading crates on a ship finds that a 24 kg crate, initially at rest on a horizontal surface, requires a 85 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 53 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor.
A dockworker loading crates on a ship finds that a 24 kg crate, initially at rest on a horizontal surface, requires a 78 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 58 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor.