A crate of mass my = 12.4 kg is pulled by a massless rope up a 36.9 ramp. The rope passes over an ideal pulley and is attached to a hanging crate of mass m2 = 16.3 kg. The crates move 1.50 m, starting from rest. If the frictional force on the sliding crate has magnitude 1.66 18.4 N and the tension in the rope is 121.5 N, find the total work done on the sliding crate. points eBook Hint m2 Print PhotoGrid References The total work done on the sliding crate is Required information An arrangement of two pulleys, as shown in the figure, is used to starting point. Assume the pulleys and rope are ideal and used to lift a 76.6-kg crate a distance of 3.47 m above the ! are ideal and that all rope sections are essentially vertical. Required information A shooting star is a meteoroid that burns up when it reaches Earth's atmosphere. Many of these meteoroids are quite small. Compare the kinetic energy of a shooting star to that of a moving car. What is the kinetic energy of a meteoroid of mass 4.54 g moving at a speed of 49.8 km/s? MJ Pke where P = 76 .6 . What is the change in the potential energy of the crate when it is lifted a distance of 3.47 m? KJ Required information An arrangement of two pulleys, as shown in the figure, is used to lift a 7 starting point. Assume the pulleys and rope are ideal and that all robe cook crate a distance of 3.47 m above the ! t all rope sections are essentially vertical. Required information A shooting star is a meteoroid that burns up when it reaches Earth's atmosphere. Many of these meteoroids are quite small. Compare the kinetic energy of a shooting star to that of a moving car. What is the kinetic energy of a 1014-kg car moving at 29.1 m/s (65.1 mi/h)? MJ P ke where P = 76.6. How much work must be done to lift the crate a distance of 3.47 m? KJ ter 6 Assignment i Saved ! Help Save & Exit Submit Required information Check my work An arrangement of two pulleys, as shown in the figure, is used to lift a 76.6-kg crate a distance of 3.47 m above the 4 starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. A motorist driving a 1171-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.00 s. Ignoring friction and air ice, determine the average mechanical power in watts the engine must supply during this time interval. KW Pkg where P = 76.6 . What length of rope must be pulled to lift the crate 3.47 m
