A 10-kg block is dragged along an inclined plane (Ø= 300) with a constant speed of 2 m/s. If F is the applied force (see figure), and the coefficient of kinetic friction is 0.25, calculate the power developed by this force.
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A: M= 10kg Angle is 30° Speed(v) = 2m/s Applied force is F Coefficient of friction (u) = 0.25
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- What average mechanical power (in W) must a 70.5 kg mountain climber generate to climb to the summit of a hill of height 305 m in 47.0 min? Note: Due to inefficiencies in converting ch energy to mechanical energy, the amount calculated here is only a fraction of the power that must be produced by the climber's body. HINT W Need Help? Read It Watch ItA block of mass 7.50 kg is being pulled along a level surface as shown, by a force directed at 30.0 degrees above horizontal. The pulling force has a magnitude of 68.0 N. Ignore the friction for now. If the total work done by the pulling force is 255 J, then how far has the block traveled? Hints on solving strategy: Remember from Flipping Physics that work is measured in Joules (J). You'll need to use the formula Mr. P gives for calculating the work done by a force over a given displacement.(a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force F at an angle e with respect to the horizontal. The coefficient of kinetic fric- tion between block and table is uz Is the force exerted by friction equal to µ̟mg? If not, what is the force exerted by friction? (b) How much work is done by the friction force and by F? (Don't forget the signs.) (c) Identify all the forces that do no work on the block. (d) Let m = 2.00 kg, x = 4.00 m, 0 = 37.0°, F = 15.0 N, and uz the answers to parts (a) and (b). 0.400, and find
- Calculate the work done (in J) on a 1550 kg elevator car by its cable to lift it 37.5 m at a constant speed, assuming friction averages 115 N. What is the total work done (in J) on the lift?What average mechanical power (W) must a 76.5kg mountain climber generate to climb to the summit of a hill of height 405 m in 46.0 min? Due to in converting chemical energy to mechanical energy, the amount calculated here is only a fraction of the power that must be produced by the climber's bodyIn 1970 the population of the world was about 3.5 x 10 ^ 9 and about 2 x 10 ^ 20 of work was performed under human control. Find the average power consumption per person in watts and in horsepower (1 year-3.15 x 10's).
- A block of mass 2 kg is initially at rest on a frictionless surface. A force of 10 N is applied to the block for a distance of 5 meters along the horizontal direction. Calculate the work done on the block and the final kinetic energy of the block. (Note: In this question, assume the force is constant and applied parallel to the displacement of the block.) Take acceleration due to gravity as 9.8 m/s².The power of a small motor in a toy can be calculated by the amount of work it does in a period of time .what is the power rating of a tor motor that does 3830J of work in 83.0second?Hk=0.38. If the speed of the block v=7m/s when it leaves the inclined plane, determine the work done by the force of gravity. Take g =9.81m/s² and express your final result using one decimal place. A block of mass m=1.64kg is released from rest at an unknown height h. The coefficient of friction between the block and the incline oriented at an angle of 0=56° is m h т
- A box with a mass 2.0 kg that initially slides on the floor with a speed of 5.0 m/s is accelerated at a ratio of 4.0 m/s^2 times 10.0s. Find the net work done on the box.A cart with a mass of 1.25 kg is rolling down an inclined plane at a speed of 1.76 m/s at the instant it is 2.50 m from the end of the incline. If the incline is tilted at an angle of 52.0° to the horizontal, the mechanical energy of the cart relative to the base of the plane is J. Enter your three-digit answer.In a horsepower lab, you "lifted" your mass up a staircase. Please help a online student and redo the calculations. They have a mass of 80kg, the staircase was remeasured at 4m with an angle of 30 degrees and it took 6 seconds to reach the second floor. Find the work done (W), the power employed and the IMA of the staircase.