A woman pushes a lawn mower with a force of 80 N. If the handle of the lawn mower is 40° above the horizontal,how much downward force is being exerted on the ground?2.9. An airplane is heading northeast at a velocity of 550 km/h. What is the northward component of its velocity? Theeastward component?2.10 A boat heads northwest at 20 km/h in a river that flows east at 6 km/h. What are the magnitude and direction of theboat's velocity relative to the earth's surface?2.11. An airplane whose velocity is 120 km/h has just taken off from a runway. A car driving at 100 km/h on the runway isable to remain just below the airplane. At what angle is the airplane climbing?2.12. A boat moving at 36 km/h is crossing a river in which the current is flowing at 12 km/h. In what direction should theboat head if it is to reach a point on the other side of the river directly opposite its starting point?2.13. An airplane flies 400 km west from city A to city B, then 300 km northwest to city C, and finally 100 km north tocity D. How far it is from city A to city D? In what direction must the airplane head to return directly to city A fromcity D?2.14. Find the magnitude and direction of the resultant of a 5-N force that acts at an angle of 37° clockwise from the +xaxis, a 3-N force that acts at an angle of 180° clockwise from the +x axis, and a 7-N force that acts at an angle of225° clockwise from the +x axis.2.1Find the magnitude and direction of the resultant of a 60-N force that acts at an angle of 45° clockwise from the +yaxis, a 20-N force that acts at an angle of 90° clockwise from the +y axis, and a 40-N force that acts at an angle of300° clockwise from the +y axis.

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2 A woman pushes a lawn mower with a force of 80 N. If the handle of the lawn mower is 40° above the horizontal, how much downward force is being exerted on the ground? 2.9. An airplane is heading northeast at a velocity of 550 km/h. What is the northward component of its velocity? The

2 A woman pushes a lawn mower with a force of 80 N. If the handle of the lawn mower is 40° above the horizontal, how much downward force is being exerted on the ground? 2.9. An airplane is heading northeast at a velocity of 550 km/h. What is the northward component of its velocity? The

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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