A 1,200-N crate is being pushed across a level floor at a constant speed by a force F of 260 N at an angle of 20.0° below the horizontal, as shown in the figure a below. F 20.0 a b 20.0° n (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 260-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a). m/s²

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### Physics Problem: Crate and Friction

A 1,200-N crate is being pushed across a level floor at a constant speed by a force \( F \) of 260 N at an angle of 20.0° below the horizontal, as shown in figure (a) below.

#### Figure Description:
- **Figure (a):** Force \( F \) is applied at an angle of 20.0° below the horizontal plane. The diagram illustrates the crate moving to the right, with the force vector pointing downward at an angle.
- **Figure (b):** Force \( F \) is instead applied at an angle of 20.0° above the horizontal. This setup is used in part (b) of the problem.

#### Problem Statement:

**(a)** What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.)

**(b)** If the 260-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in figure (b), what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a).

- Enter your answer in the box provided: \[ \_\_\_\_\_ \, \text{m/s}^2 \]
Transcribed Image Text:### Physics Problem: Crate and Friction A 1,200-N crate is being pushed across a level floor at a constant speed by a force \( F \) of 260 N at an angle of 20.0° below the horizontal, as shown in figure (a) below. #### Figure Description: - **Figure (a):** Force \( F \) is applied at an angle of 20.0° below the horizontal plane. The diagram illustrates the crate moving to the right, with the force vector pointing downward at an angle. - **Figure (b):** Force \( F \) is instead applied at an angle of 20.0° above the horizontal. This setup is used in part (b) of the problem. #### Problem Statement: **(a)** What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) **(b)** If the 260-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in figure (b), what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a). - Enter your answer in the box provided: \[ \_\_\_\_\_ \, \text{m/s}^2 \]
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