Clarification: 1 h / 2 = 30 minutos   The whole statement is in the picture   A 3kg box rests on a horizontal platform and is tied to another 2kg box by a light rope; a). What is the minimum coefficient of static friction that allows the two boxes to remain at rest? b). If the coefficient of static friction is less than that found in point (a) and the coefficient of kinetic friction between the box and the platform is 0.3, determine the time it will take for the 2kg mass to travel the 2m that separate it from the ground, assuming that the system starts from rest. c). If the rope breaks, after having traveled h / 2, calculate: The acceleration of each block. The time block 2 reaches the ground. The speed of the two blocks, one instant before block 2 hits the ground.

College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
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Chapter4: The Laws Of Motion
Section: Chapter Questions
Problem 60AP: (a) What is the minimum force of friction required to hold the system of Figure P4.74 in...
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Clarification:

1 h / 2 =
30 minutos
 
The whole statement is in the picture
 

A 3kg box rests on a horizontal platform and is tied to another 2kg box by a light rope;

a). What is the minimum coefficient of static friction that allows the two boxes to remain at rest?

b). If the coefficient of static friction is less than that found in point (a) and the coefficient of kinetic friction between the box and the platform is 0.3, determine the time it will take for the 2kg mass to travel the 2m that separate it from the ground, assuming that the system starts from rest.

c). If the rope breaks, after having traveled h / 2, calculate:

  • The acceleration of each block.
  • The time block 2 reaches the ground.
  • The speed of the two blocks, one instant before block 2 hits the ground.
2. A 3kg box rests on a horizontal platform and is tied to another 2kg box by a light rope;
a. What is the minimum coefficient of static friction that allows the two boxes to remain at rest?
b. If the coefficient of static friction is less than that found in point (a) and the coefficient of kinetic
friction between the box and the platform is 0.3, determine the time it will take for the 2kg mass to
travel the 2m that separate it from the ground, assuming that the system starts from rest.
c. If the rope breaks, after having traveled h /2, calculate:
• The acceleration of each block.
• The time block 2 reaches the ground.
• The speed of the two blocks, one instant before block 2 hits the ground.
3
Transcribed Image Text:2. A 3kg box rests on a horizontal platform and is tied to another 2kg box by a light rope; a. What is the minimum coefficient of static friction that allows the two boxes to remain at rest? b. If the coefficient of static friction is less than that found in point (a) and the coefficient of kinetic friction between the box and the platform is 0.3, determine the time it will take for the 2kg mass to travel the 2m that separate it from the ground, assuming that the system starts from rest. c. If the rope breaks, after having traveled h /2, calculate: • The acceleration of each block. • The time block 2 reaches the ground. • The speed of the two blocks, one instant before block 2 hits the ground. 3
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