If we push a crate at constant velocity, how do we know how much friction acts on the crate compared to our pushing force?
The friction force acting on the crate compared to the pushing force acted on the crate when it is pushed with constant velocity.
Answer to Problem 19RQ
The friction force acting on the crate compared to the pushing force acted on the crate when it is pushed with constant velocity is equal and opposite to the pushing force.
Explanation of Solution
The friction force is a type of force which acts in the opposite direction of moving object, which results in a decrement in the value of speed of the object. When the crate is pushed with constant velocity, then the crate will be in a state of equilibrium as the net force acting over the crate will be zero. So, there must be a force acting opposite to the direction of pushing force. As the crate is in equilibrium, therefore friction force must be equal and opposite to the pushing force.
Conclusion:
Therefore, the friction force acting on the crate is equal and opposite to the pushing force.
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