Question

there are five questions for this scenario. a person is pushing a 75 kg bookshelf across a floor in a room on earth. the room is filed with air. the bookshelf is moving at a constant velocity of 4 m/s to the left. (d) what is the weight of the bookshelf here on earth? show your calculation.

Explanation:

Step1: Recall the formula for weight

Weight \( W \) is calculated using the formula \( W = m \times g \), where \( m \) is the mass and \( g \) is the acceleration due to gravity. On Earth, \( g \approx 9.8 \, \text{m/s}^2 \).

Step2: Identify the given values

The mass \( m \) of the bookshelf is \( 75 \, \text{kg} \), and \( g = 9.8 \, \text{m/s}^2 \).

Step3: Substitute the values into the formula

\( W = 75 \, \text{kg} \times 9.8 \, \text{m/s}^2 \)
\( W = 735 \, \text{N} \)

Answer:

The weight of the bookshelf on Earth is \( 735 \, \text{N} \).