Class Management I Help Homework 8 Begin Date: 3/29/2018 12:0000 AM- Due Date: 4
ID: 2038474 • Letter: C
Question
Class Management I Help Homework 8 Begin Date: 3/29/2018 12:0000 AM- Due Date: 49201811900 PM End Date: 49/2018 1159.00 PM (11%) Problem 5: Three beads are placed on the vertices of an equilateral traingle of side d 3.8 cm. The first bead of mass m,-140 g is placed on the top vertex The second bead of mass m, 45 g is placed on the left vertex. The third bead of mass m, 85 g is placed on the right vertex 12 Otheexpertta.com & 25% Part (a) write a symbolic equation for the honzontal component of the center of mass relative to the left vertex of the triangle. Grade Summary Deductions 0% Potential 100% Attempts remaining 2 04 per attempt detailed view SubmtHnt I give up Feedback: 201 deduction per feedback. Hints: 200 deduction per hint. Hints remaining " ? 25% Part (b) Find the horizontal component of the center of mass relative to the left vertex, in centimeters. 250% Part () Write a symbolic equation for the vertical component of the center of mass relative to the base of the triangle. H à 25% Part (d) Find the vertical component of the center of mass relative to the base of the triangle, in centimetersExplanation / Answer
?m = m1 + m2 + m3 = (140 + 45 + 85) = 270 gram;
horizontal component of the center of mass relative to the left vortex:
Xcm = (m1 * ½ * d + m3 * d) / ?m; (symbolic equation)
= (140*1.9 + 85*3.8)/270;
= 2.18 cm.