A 100 N horizontal force is applied to a 5.0 kg box causing the box to move at a constant speed of 3.0 m/s. What is the value of the friction force on the box? 50 N 100 N 115 N 85 N

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15-11-2018
Physics

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A 100 N horizontal force is applied to a 5.0 kg box causing the box to move at a constant speed of 3.0 m/s. What is the value of the friction force on the box? 50 N 100 N 115 N 85 N

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zlskfrum zlskfrum · Answer 1 · 2018-11-15T21:32:09+01:00

zlskfrum zlskfrum

15-11-2018

The box to move at a constant speed so there is no acceleration. The horizontal force applied is only for overcoming the friction force. So the friction force = the applied force = 100 N.

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Asdfjkadfjkakjf Asdfjkadfjkakjf · Answer 2 · 2018-11-15T21:35:56+01:00

Asdfjkadfjkakjf Asdfjkadfjkakjf

15-11-2018

F = ma + friction

m=5kg but speed=3.0m/s=constant so a=0

F = friction = 100 N

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