xPhys207 M Power Equations Formulas x Cutnell, Physics, 10e INTRO TO PHYSICS(PHY
ID: 1583138 • Letter: X
Question
xPhys207 M Power Equations Formulas x Cutnell, Physics, 10e INTRO TO PHYSICS(PHYS 207/ Gradebook ORION Downleadable eTextbook BACK Chapter 06, Problem 40 GO The drowing shows twe bones rest ng on hetionless ramps. Oe box is relatively light and sts on·steep rang. The other box is heave, and rests on a rarp that s steep. The boxes are released from rest at A and allowed to slide down the ramps. The two boxes have masses of 13 and 40 kg. r A and B are 4.0 and 1.5 m, respectively above the ground, determine the speed of (a) the lighter box and (b) the heavier box when each reaches B. (c) What is the ratio of the kinetic energy of the heavier box to that of the lighter box at 8 (a) vs (b)D by accessing this Question Aitnce, you will learn while you earm points based on the Point Potential Pollcy set by your instructor 5 8Explanation / Answer
a) v = sqrt [2 * g * delta h]
= sqrt [2 * 9.8 * (4.0 - 1.5)] = 7.00 m/s
b) v = sqrt [2 g * delta h]
= sqrt [2 * 9.8 * (4.0 - 1.5)] = 7.00 m/s
c) KEheavier / KElighter = m1 / m2
= 40 / 13 = 3.08
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