A flatbed truck is carrying a crate along a level road. The coefficient of static friction between the load and the bed is 0.40. The truck accelerates forward and the crate stays in its place on the truck bed. In what direction is the force that the bed exerts on the crate?Group of answer choicesThere is not enough information to answer this question.backwardforwardThere is no frictional force because the crate does not move with respect to the bed.toward the center of the road
Question
A flatbed truck is carrying a crate along a level road. The coefficient of static friction between the load and the bed is 0.40. The truck accelerates forward and the crate stays in its place on the truck bed. In what direction is the force that the bed exerts on the crate?Group of answer choicesThere is not enough information to answer this question.backwardforwardThere is no frictional force because the crate does not move with respect to the bed.toward the center of the road
Solution
The force that the bed exerts on the crate is forward. This is because the truck is accelerating forward and the crate is not moving with respect to the truck bed. The frictional force, which is the force that the bed exerts on the crate, opposes the direction of motion. Since the truck is moving forward, the frictional force is also directed forward to prevent the crate from sliding backward.
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