The figure below shows a person lifting a box with a mass of 18.9 kg a height of 1.4 m and moving it horizontally a displacement (d) of 5.0 m. Ignore friction. Determine the work done on the box by the person in Joules.
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The figure below shows a person lifting a box with a mass of 18.9 kg a height of 1.4 m and moving it horizontally a displacement (d) of 5.0 m. Ignore friction. Determine the work done on the box by the person in Joules.
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- The force component along the displacement varies with the magnitude of the displacement, as shown in the graph. Find the work done by the force in the interval from (a) 0 to 0.9 m, (b) 1.0 to 2.0 m, and (c) 2.0 to 3.8 m. (Note: In the last interval the force component is negative, so the work is negative.)A student could either pull or push, at an angle of 30⁰⁰ from the horizontal, a 60 kgkg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and surface is 0.21. The crate is to be moved a horizontal distance of 25 mm A) Compared with pushing, pulling requires the student to do more, less, or the same work. B) Calculate the minimum work required for both pulling and pushing. Express your answers using two significant figures separated by a comma. Answer must be in J Wpulling, Wpushing =A block of mass m = 2.0 kg is pushed a distance d = 4.0 m along a friction surface with coefficient of kinitik friction 0.20, horizontal table by a constant applied force of magnitude F = 25.0 N directed at an angle 0 = 20º below the horizontal as shown in Figure. Determine the work done on the block by: 1. The applied force. 2. The normal force exerted by the table. 3. The gravitational force. 4. The net force on the block. m d
- answer should be fractionState the condition when the work done by a force is (a) positive (b) negative. Explain with help of examples.DP-1 A 7.50kg box is pushed 1.70m along a frictionless horizontal table top by a constant force directed below as shown to the right. The work done by P is 25.0J. Find the angle 8 between the force P and the horizontal. P=20.0N Table top Ax 1.70m1 7.50kg
- A 97.5-kg man pushes a crate 4.5 m up along a ramp that makes an angle of 17.5° with the horizontal. He exerts a force of 495 N on the crate parallel to the ramp and moves it at a constant speed. Calculate the work, in joules, that the man performs to cause the crate and himself to move up the ramp.An object moves a distance 71 m when a force of 54 N is applied in that same direction. Calculate the work done by the force on the object as it moves. W = O Search CO J B.Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 85.0 kg down a 60° slope at constant speed, as shown in the figure. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves 30.0 m along the hill. Enter to 3 significant figures W fric (b) How much work is done by the rope on the sled in this distance? Hint: use Newton's second law to find the tension. Enter to 3 significant figures Wrope W. grav 60° J (c) What is the work done by the gravitational force on the sled? Enter to 3 significant figures J W₁ W J (d) What is the work done by the normal force? WN= J total (e) What is the total work done? Enter to 3 significant figures Note: When adding work done by individual forces, DO NOT ROUND THE VALUES TO FIND THE SUM. J Sense-making: If the speed of the rescue sled & the victim is constant, what do you expect the total work done on the rescue sled and the victim to be? Does your answer support…
- An elevator having a mass of 585 kg is raised a distance of 32 m. Determine the work done, neglecting frictional effects and the work required for acceleration.A block of mass 15kg slides down a ramp inclined at 28.0 above the horizontal. As it slides, a kinetic friction force of 30N parallel to the ramp acts on it. If the block slides 3m along the ramp, find..... a) the work done on the block by friction? b) the work done on the block by the force of gravity? c) the work done on the block by the normal force? d) the total work done on the block? Why is b not a negative answer? Please provide a complete solution set without any skipped steps and please double check your work.A man pushes a m = 4.00 kg bin a distance d = 3.40 m along the floor by a constant force of magnitude F = 16.0N directed at an angle 6 = 30.0° below the horizontal as shown in the figure. Assume the floor is frictionless. (Enter your answers in joules.) m (a) Determine the work done on the bin by the applied force (the force on the bin exerted by the man). (b) Determine the work done on the bin by the normal force exerted by the floor. (c) Determine the work done on the bin by the gravitational force. (d) Determine the work done by the net force on the bin.