A mass of 2 kg is separated from a wall via a spring (k=1500 N/m). You manage to compress the spring 1.3 meters before it slips through your hands and launches across the floor. If there is a coefficient of kinetic friction of 0.25 between the block and the floor, how much force is friction applying to the block? How far will the block travel before coming to a stop? How much work did friction do on the block?
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- An 8.10 kg package in a mail-sorting room slides 2.30 m down a chute that is inclined at 51.8 degrees below the horizontal. The coefficient of kinetic friction between the package and the chute's surface is 0.44. Part A- What is the net work done on the package?Express your answer in joules. Part B-Calculate the work done on the package by gravity. Express your answer in joules. Part C-Calculate the work done on the package by the normal force.Express your answer in joules. Part D- What is the net work done on the package? Express your answer in joules.Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of 6.00 m. The tension force in the rope is 58.0 N and the angle is 30° with respect to the horizontal. The frictional force on the box is 12.0 N. How much work is done on the box by the normal force, in Joule? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of 6.00 m. The tension force in the rope is 58.0 N and the angle is 30° with respect to the horizontal. The frictional force on the box is 18.0 N. How much work is done on the box by the tension force, in Joule? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
- The spring-flex exercise system consists of a spring with one end fixed and a handle on the other end. The idea is that you exercise your muscles by stretching the spring from its natural length, which is 48 cm. If a 200 Newton force is required to keep the spring stretched to a length of 66 cm, how much work is required to stretch it from 62 cm to 76 cm? Your answer must include the correct units. Work=Starting from rest, a 6.2-kg block slides 3.2 m down a rough 37-degree incline. The coefficient of kinetic friction between the block and the incline is μk = 0.55. a) Determine the work done by the friction force between block and incline. b) Determine the work done by the normal force. c) Determine the net work done on the block.An object of mass 5 kg is pulled by a constant force of 6.2 N at an angle of 350 above the horizontal through a distance of 7 m. What is the work done on the object? Neglect friction. An object of mass 5 kg is pulled by a constant force of 6.2 N at an angle of 350 above the horizontal through a distance of 7 m. What is the work done on the object? Neglect friction. 55 J 46 J 43 J 36 J
- The two masses in the figure are released from rest. After the 3.0-kg mass has fallen 1.5 m, it is moving with a speed of 3.8 m/s. How much work is done during this time interval by the frictional force on the 2.0 kg mass? 2.0 kg 3.0 kg O-20 J -28 J -8.0 J O-17 J 0-12 JA 64.0 kg sled is pulled from rest by a snowmobile and accelerates at 2.5 [forward] for 7.5 s. The force of friction acting on the sled is 121.0 N [backwards]. The total mass of the snowmobile and the driver is 458.0 kg and the force of friction acting on the snowmobile is 540.0 N [backwards]. Determine the work done by the snowmobile engine. Input your answer with 1 decimal place