l Help Newton\'s Laws Begin Date: 3/1/2018 12:01:00 AM - Due Date: 3/11/2018 11:
ID: 1585484 • Letter: L
Question
l Help Newton's Laws Begin Date: 3/1/2018 12:01:00 AM - Due Date: 3/11/2018 11:59:00 PM End Date: 3/29/2018 11:59:00 PM (13%) Problem 2: An object of mass m has these three forces acting on it (there is no normal force, "no surface"). F1-1 N, F2 = 6 N, and F3-3 N. When answering the questions below, assume the x direction is to the right, and the y-direction is straight upwards F. ©theexpertta.com > 25% Part (a) What is the net force in component form, in terms of F1, F2, F3, and the unit vectors i and j Grade Summary 2% 98% IF Attempts remaining: 6 (1%per attempt) detailed view 0 1% 1% Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. 25% Part (b) What is the magnitude of the net force, in newtons? 25% Part (c) What is the angle , in degrees, of the net force, measured from the +x-axis? Enter an angle between-180° and 180° 25% Part (d) What is the magnitude, lal of the acceleration, in meters per square second. if the block has a mass of 7.6 kg?Explanation / Answer
a) Fnet = (F2 - F3) i - F1 j
= (6 - 3) i - (1) j
net force= 3 i - j
b) magnitude = sqrt [32 + 12]
magnitude of net force = 3.16 N
c) theta = tan-1[1/3] = 18.4 deg
d) a = F / m
= 3.16 / 7.6
accleration = 0.416 m/s2
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