mymasonportal.gmu.edu Home Page- PHYS-243-001 (Fall 2018) Take Test: Week 5\'\"F

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mymasonportal.gmu.edu Home Page- PHYS-243-001 (Fall 2018) Take Test: Week 5'"Forces" part 2 2018-PHY Chegg Study | Guided Solutions and Study H Two Forces Are Exerted On A 23 Kg Box F Two Forces Are Exerted On A 10 Kg Box: F1... Question Completion Status: What is the magnitude of the net force acting on the box? (round your answer to the nearest integer) Newtons What is the direction (to +x) of the net force? (specify the angle, round to the nearest integer) degrees QUESTION 13 1 points Save Answer Three forces are exerted on a 1 kg ball: F1 -20 N, F2 40 N and F3 20 N as shown in figure below. Choose right as positive direction. What is the magnitude of the net force acting on the ball? (round your answer to the nearest integer) Newtons What is the direction (to +x) of the net force? (specify the angle, round to the nearest integer) degrees QUESTION 14 1 points Save Answer Three forces are exerted on a 1 kg ball: F1 20 N, F2 20 N and F3-20 N. The forces are oriented at 120 degrees to each other as shown in figure below. Choose right as positive direction. Click Save and Submit to save and submit. Cick Save All Answers to save ail ansuwers. Save All Answers Close Window Save and Submit

Explanation / Answer

F1 = 20 N in +ve y-axis

F1 = 20 j

F2 = 40 N in +ve x-axis

F2 = 40 i

F3 = 20 N in -ve y-axis

F3 = 20 (-j) = -20 j

Net force will be

Fnet = F1 + F2 + F3

Fnet = 20 j + 40 i - 20 j

Fnet = 40 i - 0 j

Fnet = 40 i

So magnitude of net force will be

|Fnet| = |40 i| = 40 N

Direction = i = positive x-axis = 0 deg with +x-axis

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