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- A baseball of mass m = 0.46 kg is spun vertically on a massless string of length L = 0.96 m. The string can only support a tension of T max = 11.8 N before it will break What is the maximum possible speed of the ball at the top of the loop, in meters per second?A man is attempting to lift a crate with a double-pulley system, as shown. A single rope is routed from the ceiling, through the two pulleys, and to where the man pulls on it. The crate has mass m2 = 68 kg, and the man has m1 = 75 kg. He pulls downward on the rope with a force of magnitude F = 599 N. The pulleys are both massless and frictionless, and the rope is ideal. What is the magnitude, in newtons, of the tension force, T?What is the acceleration, in meters per squared second, of the crate?A car moves up a slope of 10% (sin -0.1), its center of mass G moves along a line of greatest slope of the plane. At the instant t=0, G is at A with a velocity VA =20m/s. At the instant ti. G reaches B with a velocity VB= 30m/s. The force of friction which opposes the motion is 400 N: the tractive force is constant of value 2000 N. The mass of the car is m = 1000kg. Take g = 10mn/s. 1) What are the forces acting on G? Represent these forces on a diagram. 2) Write down the expression giving the acceleration a of G as a function of f F. g. m and a then calculate its value and give the nature of the motion of G between A and B. 3) Calculate ti and the distance of AB. 4) When G passes through B the driver stops the motor without applying the brakes, the car stops then at C. Study the nature of motion of betwen B and C and caleulate Be