Here ,
let the speed of the blocks is m1 and m2 is v
Using conservation of energy
0.50 * 3 * v^2 + 0.50 * 4 * v^2 = 4 * 9.8 * 1.50
solving for v
v = 4.1 m/s
the speed of the boxes m1 and m2 is 4.1 m/s
A block of mass m_1 = 1.5 kg is placed on a horizontal surface. Attached to the block is a string which passes over a pulley and suspends a mass m_2 = 3.5 kg as shown in the diagram below. If the system accelerates at a = 5.2 m/s^2, what is the coefficient of kinetic friction mu_k between the horizontal surface and m_1?
Mass M_2 starts from rest and falls a height H. Mass M_1 is attached by a rope to mass M_2. The rope goes over a massless and frictionless pulley. Assume the rope is massless and does not stretch. The coefficient of kinetic friction mu k exist between M_1 and the table. Determine the acceleration of M_1 after M_2 is released Determine the time it takes M_2 to fall to the ground. Determine the velocity of M_1 as M_2 hits the...
An experiment is done on a horizontal surface. A block of mass m_1 is initially held in place compressing a spring with spring constant k by a distance x_0. The other end of the spring is firmly attached to the wall and does not move. What is the final speed of m_1 after it is released and loses contact with the spring? After it reaches its final speed, m_1 collides and sticks to a second block of mass m_2. What...
A block of mass .5kg is ona table and attached to a block of mass .25kg by a taut massless string. The .25kg block hangs by means of the string, which goes over a pulley. The .25kg block is released, and it descends from rest at a constant acceleration, travelling 1.00m in 1.25s. What is the coefficient of kinetic friction between the table and the .5kg block?
A block of mass m_1 = 1.80 kg moving at v_1 = 2.00 m/s undergoes a completely inelastic collision with a stationary block of mass m_2 = 0.300 kg. The blocks then move, stuck together, at speed v_2. After a short time, the two-block system collides inelastically with a third block, of mass m_3 = 2.20 kg, which is initially at rest. The three blocks then move, stuck together, with speed v_3. (Figure 1) Assume that the blocks slide without...
Two blocks of masses m_1 = 4 kg and m_2 = 5kg are connected by a massless string that passes over a massless frictionless pulley as shown in Fig. 6.34. Block m_1 is initially at rest on a smooth horizontal plane while block m_2 is at a height h = 0.75 m above the ground. Use conservation of mechanical energy to find the speed of the masses just before m_2 hits the ground.
A 3-kg mass is attached to a light, thin string that is wound around a uniform cylinder with a mass of 4 kg and a radius of 4 cm. The 3-kg mass is released from rest and the cylinder turns without friction as the 3-kg mass falls. a) What is the speed of the 3-kg mass after it falls 40 cm? the angular speed of the cylinder after the mass falls 40 cm?
A block A with a mass of 3 kg rests on a horizontal table top. The coefficient of kinetic friction, μk = 0.5. A horizontal string is attached to A and passes over a massless, frictionless pulley, and block B with mass 2 kg hangs from it. Because of the pull of gravity, the masses accelerate. What is the Tension in the string (in Newtons)?
In the figure below, the hanging object has a mass of m_1 = 0.400 kg; the sliding block has a mass of m_2 = 0.770 kg; and the pulley is a hollow cylinder with a mass of M = 0.350 kg, an inner radius of R_1 = 0.020 0 m, and an cuter radius of R_3 = 0.030 0 m. Assume the mass of the spokes is negligible. The coefficient of kinetic friction between the block and the horizontal surface...
A 5.8- kg concrete block rests on a level table. A 3.9- kg mass is attached to the block by a string passing over a light, frictionless pulley. If the acceleration of the block is measured to be 1.4 m/s2, what is the coefficient of friction between the block and the table?