Consider two scenarios. A ball of weight 10 N rolls on the floor and a block of weight10 N slides on a table. In which case will the applied force required to just set the body in motion greater? Why?
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Q: (b) Consider two scenarios. A ball of weight 10 N rolls on the floor and a block of weight 10 N…
A: Solution:
Consider two scenarios. A ball of weight 10 N rolls on the floor and a block of weight10 N slides on a table. In which case will the applied force required to just set the body in motion greater? Why?
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- A man who weighs 180 lbs.is riding in an elevator. Find the force exerted on the man by the floor of the elevator under the following conditions: (a) The elevator is accelerating upward at 12 ft/sec2. (b) The elevator is accelerating downward at 12 ft/sec2. (c) The elevator is accelerating downward at 32 ft/sec2. Have we made any restrictions on the directions of the velocity in parts (a), (b), and/or (c)? If so, what?Two blocks, A and B, are attached to one another by a rope that passes over a frictionless pulley as shown in the figure; the mass of block A is 4 kg and the mass of block B is 6 kg. The coefficient of kinetic friction between the block A and the surface is 0.14. The pulley can be modeled as a uniformly dense solid cylinder with a radius of 4.8 cm and a mass of 4 kg. What is the magnitude of the tension (in N) in the rope between block A and the pulley if 0 = 51°? Type your answer... B(a) You have to lift a load of 500 N. Which pulley system will you prefer? Why? Find out the effort to be applied in the pulley system you chose. (b) Consider two scenarios. A ball of weight 10 N rolls on the floor and a block of weight 10 N slides on a table. In which case will the applied force required to just set the body in motion greater? Why?
- You push a 1.00 kg food tray through the cafeteria line with a constant 9.0 N force. The tray pushes a 0.50 kg milk carton. The tray and carton slide on a horizontal surface so greasy that friction can be ignored. Find the acceleration of the tray and carton and the horizontal force that the tray exerts on the carton.A spring is used to stop a 32 kg metal sphere which is moving down a 30° incline, as shown in Figure Q2(a). The spring has a constant k = 33 kN/m and initially compressed 50 mm. Given that the velocity of the metal sphere is 5.5 m/s when it is 5 m from the spring and the friction can be neglected. (Gravity g = 9.81 m/s?) Q2. (a) Determine all the kinetic and potential energy components at the initial (i) and final position of the metal sphere. (Let the x be the additional compression of the spring). (ii) Calculate the maximum additional deformation of the spring requires to bring the metal sphere to rest. (iii) Determine after the metal sphere come into rest will it rebound upwards the slope or not? if can how much it will move up again the slope until it temporary at reset otherwise stated the reason why the metal sphere would stay at rest. 5.5m/s m=32kg 5m 30 Figure Q2(a)A 10 kg block is moving on a horizontal table. The coefficient of kinetic friction between them is 0.3. What is the frictional force acting upon the block?
- Consider the mass-on-a-spring system as shown in the figure below. The spring has a spring constant of 1.86e+3 N/m, and the block has a mass of 1.39 kg. There is a constant force of kinetic friction between the mass and the floor of 4.71 N. Starting with the spring compressed by 0.117 m from its equilibrium position, how far will the block travel once it leaves the spring? (Assume that block leaves the spring at the spring's equilibrium position, marked x=0 in the figure. Give your answer as the distance from the equilibrium position to the final position of the block.) Hint: How much work must friction do in order to bring the mass to a stop? How much distance is required for friction to do this work? Enter answer here www.m X = 0 Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Image size: S M L Max mConsider a mass-spring system. The spring has a spring constant of 2.35e+3 N/m. On the end of the spring is a mass of 0.840 kg. At the moment that the block is at the system's equilibrium position, it has velocity 2.24 m/s. What will be the maximum displacement of the block from equilibrium if we ignore all friction. Please enter a numerical answer below. Accepted formats are numbers or 'e' based scientific notation e g. 0.23.-2. 16, 523-8Two blocks initially at rest, each having a mass of 20 kg, are connected by a string as shown in the figure. The coefficient of sliding friction between the block and the inclined plane is 0.28. The plane is inclined at 350 with the horizontal. The blocks are accelerating at a magnitude of 0.8 m/s2. Assuming the pulleys to be light and frictionless. If the work due to force of friction at B is -105.84 J, find: a. The displacement moved by the block. ( Ans. -3.0 m) b. The work done by the Normal force at B. (Ans. 0 J). c. The work done by the Gravitation force at B. (Ans. 0 J)
- Two blocks initially at rest, each having a mass of 20 kg, are connected by a string as shown in the figure. The coefficient of sliding friction between the block and the inclined plane is 0.28. The plane is inclined at 350 with the horizontal. The blocks are accelerating at a magnitude of 0.8 m/s2. Assuming the pulleys to be light and frictionless. If the work due to force of friction at B is -105.84 J, find: g. The work done by the Tension at A. h. The work done by the Force of Friction at A. OE A B(II) A 25.0-kg box is released on a 27° incline and accelerates down the incline 0.30 m/s2at Find the friction force impeding its motion. What is the coefficient of kinetic friction?A boy is sitting on a spinning stool with his arms folded. By ignoring any friction in the spinning stool, what happens to his: 2. (а) angular velocity and (b) angular momentum when he extends his arm outward. Give the reason for your answer.