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brinethery
Group Title
A mass m1 = 3.5 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.8 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.71 m.
1) How much work is done by gravity on the two block system?
34 J (All of my answers are correct up to the last question, which I need help on)
2) 2) How much work is done by the normal force on m1?
0 J
3) What is the final speed of the two blocks?
2.84 m/s
4) How much work is done by tension on m1?
14.1 J
5) What is the tension in the string as the block falls?
19.9 N
7) What is the NET work done on m2?
**** This is the question I need help on. I gave the answers to the previous questions because something in there might be needed for solving this part of the problem.
 one year ago
 one year ago
brinethery Group Title
A mass m1 = 3.5 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.8 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.71 m. 1) How much work is done by gravity on the two block system? 34 J (All of my answers are correct up to the last question, which I need help on) 2) 2) How much work is done by the normal force on m1? 0 J 3) What is the final speed of the two blocks? 2.84 m/s 4) How much work is done by tension on m1? 14.1 J 5) What is the tension in the string as the block falls? 19.9 N 7) What is the NET work done on m2? **** This is the question I need help on. I gave the answers to the previous questions because something in there might be needed for solving this part of the problem.
 one year ago
 one year ago

This Question is Closed

brinethery Group TitleBest ResponseYou've already chosen the best response.0
Okay nm, got it. Just a rounding error in the velocity calculation. 7. is (0.5)(4.8)(2.84^2) = 19.4 J
 one year ago
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