1. Two men are moving a heavy metal box with a mass of 225 kg from an initial position to one that is &8 m away towards the right. The man on the left of the box pushes the box with a force of 12 N at angle 30° downward from the horizontal while the man on the right of the box pulls it with a force of 10N 40° above the horizontal. The forces exerted by both men are constant. What is the net work (Wnet) the men exert on the box? 2. In example 1, the box of cookies has a mass of 45 kg and the coefficient of friction between floor and the box is 0.3. Determine the work done by each force if the factory worker pushes the box 8 m across the factory floor.
1. Two men are moving a heavy metal box with a mass of 225 kg from an initial position to one that is &8 m away towards the right. The man on the left of the box pushes the box with a force of 12 N at angle 30° downward from the horizontal while the man on the right of the box pulls it with a force of 10N 40° above the horizontal. The forces exerted by both men are constant. What is the net work (Wnet) the men exert on the box? 2. In example 1, the box of cookies has a mass of 45 kg and the coefficient of friction between floor and the box is 0.3. Determine the work done by each force if the factory worker pushes the box 8 m across the factory floor.
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter2: Vectors
Section: Chapter Questions
Problem 26P: In a tug-of-war game on one campus, 15 students pull on a rope at both ends in an effort to displace...
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Number 1 answer should be 144 J.
Number 5 answer should be 988 J.
You must answer no. 1, 2, 4, 5 and 6
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