ooo Verizon LTE 8:56 AM 100% PHYS B2A PracticeTest 2.SS18.docx 32044 PHYS B2A -G

Question

ooo Verizon LTE 8:56 AM 100% PHYS B2A PracticeTest 2.SS18.docx 32044 PHYS B2A -General Physics-Mec and Heat Done 7. IfF-5.0 N, what is the magnitude of the force exerted by block 2 on block 1? 8. IfF 40 N and M-1.5 kg, what is the tension in the string connecting M and 2M? Assume that all surfaces are frictionless. Af 4.0-kg block slides down a 35 incline at a constant speed when a 16-N force is applied acting up and parallel to the incline. What is the coefficient of kinetic friction between the block and the surface of the incline? 9 A Page 3 of 3

Explanation / Answer

here,

7)

F = 5 N

the accelration , a = net force /effective mass

a = ( 25 - 5) /(2 + 3) m/s^2

a = 4 m/s^2

let the force exerted by block 2 on block 2 be ff

for 1

25 - ff = 2 * a

25 - ff = 2 * 4

ff = 17 N

the force exerted by block 2 on block 2 is a) 17 N

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