Chapter 07, Problem 58 uorted l teac n eamingwarez2provides a review of the conc

Question

Chapter 07, Problem 58 uorted l teac n eamingwarez2provides a review of the concepts that are impotam in this problem. For tetts using a balktoartgron a peert let on a home-platom tr on jets of air Because of the air jets, the friction impeding the horizontal motion of the platform is negligble. Each sime the heart beats, blood is pushed out of the heart in a direction that is nearly peralilel to the platform suppose that o.0320 k0 of bood is pushed out of the heart weh a veiery of +0.217mv. and that the mass of the poeert rd plattrm isses . Amring pat n. patie" does not sie with respect to the platform, and that the patient and platform start from rest, determine the recoll velacty Units 8 the tolerance as +/-3%

Explanation / Answer

m1 = 0.0320 kg, v1 = 0.217 m/s, m2 = 66.5 kg   

From law of conservation of linear momentum

m1 v1 + m2 v2 = 0

(0.0320 * 0.217) + (66.5 * v2) = 0

recoil velocity v2 = 1.04 * 10-4 m/s = 0.104 mm/s

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