All answers and procedures should be written legibly and carefully All answers h

Question

All answers and procedures should be written legibly and carefully All answers have the significant digits in calculation. Show your whole work in detail. Don't skip the units in your final answers. Don't talk to anybody except instructor during the exam period. do not take nor break off this exam papers, An object with mass m1 = 300g, rest on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2 = 600g, as shown in the figure below. Answer the following questions, Use g = 10. 0 m/s2. Draw the free body diagram for mass m1 and m2. Find the acceleration of mass m1. Find the tension in the spring. If the table has frictional surface which has a frictional coefficients as 0. 25, find the frictional energy of mass m1 if m2 falls down 10 inch from the rest position.

Explanation / Answer

Suppose acceleration is a b) m2g - T =m2a T =m1a a= m2g /(m1+m2) = 600x 10/ (600+300) =6.67 m/s^2 c) T = m1a = 0.3a = 2N d)Frictional energy = Force x distance = 0.25 x 0.3 x 10 x 0.254 m =0.1905 J

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