Question

2. You drag a trunk of mass m across a level floor with a massless rope that does not stretch. The rope makes an angle \theta with the horizontal. If the coefficient of kinetic friction is $\mu_k$, what must be the tension in the rope to move the trunk at constant speed? Step 1: Free body diagram -- pay attention how you are constructing the lengths of the arrows that are representing force Step 2: Identify a reference frame Step 3: Identify Newton's laws in both directions -- look for clues in the problem statement. Is the trunk moving with constant speed or is it changing? Step 4: Solve for T in terms of the given variables $(\mu_k, m, \theta)$ How would your answer change if there were a smaller trunk of mass M on top of the larger trunk? (just a description is required, not a recalculation). 3. When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.500 m/s$^2$. Block 1 has mass M, block 2 has mass 2M and block 3 has mass 2M. What is the coefficient of kinetic friction between block 2 and the table?

          2. You drag a trunk of mass m across a level floor with a massless rope that does not stretch. The rope makes an angle \theta with the horizontal. If the coefficient of kinetic friction is \(\mu_k\), what must be the tension in the rope to move the trunk at constant speed?
Step 1: Free body diagram -- pay attention how you are constructing the lengths of the arrows that are representing force
Step 2: Identify a reference frame
Step 3: Identify Newton's laws in both directions -- look for clues in the problem statement. Is the trunk moving with constant speed or is it changing?
Step 4: Solve for T in terms of the given variables \((\mu_k, m, \theta)\)
How would your answer change if there were a smaller trunk of mass M on top of the larger trunk? (just a description is required, not a recalculation).
3. When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.500 m/s$^2$. Block 1 has mass M, block 2 has mass 2M and block 3 has mass 2M. What is the coefficient of kinetic friction between block 2 and the table?

2. You drag a trunk of mass m across a level floor with a massless rope that does not stretch. The rope makes an angle θwith the horizontal. If the coefficient of kinetic friction is , what must be the tension in the rope to move the trunk at constant speed?
Step 1: Free body diagram – pay attention how you are constructing the lengths of the arrows that are representing force
Step 2: Identify a reference frame
Step 3: Identify Newton's laws in both directions – look for clues in the problem statement. Is the trunk moving with constant speed or is it changing?
Step 4: Solve for T in terms of the given variables (, m, θ)
How would your answer change if there were a smaller trunk of mass M on top of the larger trunk? (just a description is required, not a recalculation).
3. When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.500 m/s^2. Block 1 has mass M, block 2 has mass 2M and block 3 has mass 2M. What is the coefficient of kinetic friction between block 2 and the table?

Added by Carla F.

Question

Please give Ace some feedback