42. The device shown below is Assuming that the masses of the string and the frictionless pulley are negligible, (a) find an equation for the acceleration of the two blocks; (b) find an equation for the tension in the string; and (c) find both the acceleration and tension when block 1 has mass 2.00 kg and block 2 has mass 4.00 kg. m1 m2
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- Suppose the coefficient of static friction between a penny and the back wall of a rocket car is 0.261. At what minimum rate (in m/s2) would the car have to accelerate so that a penny placed on the back wall would remain in place? Draw the coin's free-body diagram, find an expression for the normal force using the x-component of Newton's second law, and solve for the required acceleration using the y-component of Newton's second law after substituting fs, max = μsn. ___m/s^2Two blocks, M1 and M2, are connected by a massless string that passes over a massless pulley as shown in the figure. M2, which has a mass of 25.0 kg, rests on a long ramp of angle ?=25.0∘. Friction can be ignored in this problem. Determine the mass ?1 of block M1 for which the two blocks are in equilibrium (no acceleration). If the actual mass of M1 is 5.00 kg and the system is allowed to move, what is the acceleration ? of the two blocks? A positive acceleration corresponds to M2 moving up the incline. What distance ? does block M2 move in 2.00 s?Two objects are connected by a light string that passes over a frictionlesspulley as shown in the figure below. Assume the incline is frictionless andtake m1 =2.00kg, m2 = 7.00 kg, and θ = 55.0°.(a) Draw free-body diagrams of both objects.(b) Find the magnitude of the accelerations of the objects.(c) Find the tension in the string.