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Please Help! Mechanix problem assignment
Please help me do my assignment in dynamics of rigid bodies. It's more on kinetics of particles and I have difficulty in figuring out how to draw the free body diagram of the blocks..
Question 1: The 20 lb block A and the 30 lb block B are initially at rest. If a force P = 30 lb is applied to B as shown, determine the acceleration of each block. The coefficient of kinetic friction between any two surface is 0.20.
Fig for this problem is prob1.jpg
Question 2: Body A has a mass of 50 kg while the mass of body B is 20 kg. A force F = 500 N is applied to body A parallel to the plane. Assuming that the plane is smooth, determine the least coefficient of friction between A and B so that slipping will not occur.
Fig for this problem is prob2.jpg.
Your solutions and answers will be appreciated. thanks.
Friction Force = uN
Summation of Forces along the path of motion = ma
PreAssumptions on Question 1:
Force P on A will be in opposite direction (?)
The weight of A will be added to B (?)
PreAssumptions on Question 2:
The weight of block B will be added on A (?)
Homework Statement
Please help me do my assignment in dynamics of rigid bodies. It's more on kinetics of particles and I have difficulty in figuring out how to draw the free body diagram of the blocks..
Question 1: The 20 lb block A and the 30 lb block B are initially at rest. If a force P = 30 lb is applied to B as shown, determine the acceleration of each block. The coefficient of kinetic friction between any two surface is 0.20.
Fig for this problem is prob1.jpg
Question 2: Body A has a mass of 50 kg while the mass of body B is 20 kg. A force F = 500 N is applied to body A parallel to the plane. Assuming that the plane is smooth, determine the least coefficient of friction between A and B so that slipping will not occur.
Fig for this problem is prob2.jpg.
Your solutions and answers will be appreciated. thanks.
Homework Equations
Friction Force = uN
Summation of Forces along the path of motion = ma
The Attempt at a Solution
PreAssumptions on Question 1:
Force P on A will be in opposite direction (?)
The weight of A will be added to B (?)
PreAssumptions on Question 2:
The weight of block B will be added on A (?)
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