Question

Two masses, m1=3 kg and m2=2 kg are on a horizontal surface and are connected together...

Two masses, m1=3 kg and m2=2 kg are on a horizontal surface and are connected together via a massless rope. An external force F pulls on m1 at an angle q=30° from the horizontal, as shown in the Figure 2 below. There is friction between m2 and the surface, with coefficients of friction

ms=0.4 and mk=0.3, however the friction between m1 and the surface is negligibly small.

  1. What is the minimum value of F such that the masses will begin to move?

  2. If, instead, F=30 N, What is the tension in the rope?

Homework Answers

Answer #1

Dear student,

Find this solution, and RATE IT ,If you find it is helpful .your rating is very important to me.If any incorrectness ,kindly let me know I will rectify them soon.

Thanks for asking ..

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Two masses m1 = 5 kg and m2 = 3 kg are connected by a light...
Two masses m1 = 5 kg and m2 = 3 kg are connected by a light rope dropped over a pulley as shown in the figure a) Neglecting friction, what is the acceleration of these masses? b) What is the tension of the rope? c) What will be the acceleration if the coefficient of friction for the mass m1 is μk = 0.4?  
Two masses, m1 = 4 kg and m2 = 6 kg are connected with a rope...
Two masses, m1 = 4 kg and m2 = 6 kg are connected with a rope and pulled with a horizontal force F=80 N along a rough floor with a kinetics friction coefficient µκ=0.2 (Assume that g = 10 ms-2). the acceleration (in ms-2) is:
Two blocks with masses m1 = 1.10 kg and m2 = 3.50 kg are connected by...
Two blocks with masses m1 = 1.10 kg and m2 = 3.50 kg are connected by a massless string. They are released from rest. The coefficent of kinetic friction between the upper block and the surface is 0.440. Assume that the pulley has a negligible mass and is frictionless, and calculate the speed of the blocks after they have moved a distance 68.0 cm.
Objects with masses m1 = 12.0 kg and m2 = 8.0 kg are connected by a...
Objects with masses m1 = 12.0 kg and m2 = 8.0 kg are connected by a light string that passes over a frictionless pulley as in the figure below. If, when the system starts from rest, m2 falls 1.00 m in 1.48 s, determine the coefficient of kinetic friction between m1 and the table.    Express the friction force in terms of the coefficient of kinetic friction. Obtain an expression for the acceleration in terms of the masses and the...
M1 has a mass of 6.090 kg. It is on a horizontal surface, connected by a...
M1 has a mass of 6.090 kg. It is on a horizontal surface, connected by a massless string to a hook where mass M2 can be increased smoothly. The pulley has a negligible mass and no friction. When M2 = 3.325 kg it begins to accelerate downwards at a rate of 2.100 m/s2. Calculate μs - μk between M1 and the surface.
Two masses are connected by a massless string and a frictionless pulley. The masses of the...
Two masses are connected by a massless string and a frictionless pulley. The masses of the blocks are; m1=500 g and m2= 150g. The coefficiant of friction between m1 and the surface is 0.25. (a) What is the acceleration of the masses? (b) What is the tension in the string?
Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a...
Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The object m1 is held at rest on the floor, and m2 rests on a fixed incline of θ = 37.5°. The objects are released from rest, and m2 slides 1.10 m down the slope of the incline in 4.45 s. A triangular structure is oriented such that its base rests...
Two blocks with masses M1 and M2 are connected by a massless string that passes over...
Two blocks with masses M1 and M2 are connected by a massless string that passes over a massless pulley as shown. M1 has a mass of 2.25 kg and is on an incline of 49.5° with coefficient of kinetic friction ?1 = 0.205. M2 has a mass of 5.45 kg and is on an incline of 31.5° with coefficient of kinetic friction ?2 = 0.105. Find the magnitude of the acceleration of M2 down the incline.
7) A block of mass m1 = 38 kg on a horizontal surface is connected to...
7) A block of mass m1 = 38 kg on a horizontal surface is connected to a mass m2 = 21.6 kg that hangs vertically as shown in the figure below. The two blocks are connected by a string of negligible mass passing over a frictionless pulley. The coefficient of kinetic friction between m1 and the horizontal surface is 0.24. (a) What is the magnitude of the acceleration (in m/s2) of the hanging mass? Answer:    m/s2 (b) Determine the...
Two packing crates of masses m1 = 10.0 kg and m2 = 4.70 kg are connected...
Two packing crates of masses m1 = 10.0 kg and m2 = 4.70 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 4.70-kg crate lies on a smooth incline of angle 35.0°. Find the following. Two crates are connected to each other by a string that passes over a pulley, which is attached to the top corner of a wedge. The crate of mass m1 hangs freely below the pulley....