A mover pushes a 30 kg crate across a level florr with a force of 250 N, but the crate accelerates at a rate of only 5.83 m/s squared because a friction force opposes the crate's motio. What is the magnitude of the force of friction?

Question

Physics

Duckling

9 November, 23:44

A mover pushes a 30 kg crate across a level florr with a force of 250 N, but the crate accelerates at a rate of only 5.83 m/s squared because a friction force opposes the crate's motio. What is the magnitude of the force of friction?

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Answers (1)

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Elaina Hernandez · Answer 1

Force of friction=75 N

Explanation:

we use Newton's second law of motion

F - Ff = ma

F = applied force=250 N

Ff = force of friction

a = acceleration = 5.83 m/s²

m = mass=30 kg

250 - Ff = 30 (5.83)

Ff=250-30 (5.83)

Ff=250-175

Ff=75 N