A man whose mass is 82 kg pushes a block with a mass of 45 kg...
A man whose mass is 82 kg pushes a block with a mass of 45 kg along a horizontal plane. The dynamic coefficient of friction between the block and plane is 0.2. Assuming that the block is moving at a constant speed, calculate the work required to move the block a distance of 30 m considering the following:
- The man
- The block as the system
Express your answers in both N.m and Joules.
Homework Answers
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A block is resting on a horizontal surface. The mass of the block is 40 kg. The coefficient of static friction between the block and the surface is us = 0.3 and the coefficient of kinetic friction is uk = 0.20. A man then decides to push on the block with 30 newtons of horizontal force. a) What is the acceleration of the block? Explain. b) Suppose the man pushes on the block with 200 newtons instead. What is the...
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Part A Constants A man pushes on a piano with mass 170 kg ;it slides at...
Part A Constants A man pushes on a piano with mass 170 kg ;it slides at constant velocity down a ramp that is inclined at 12.0° above the horizontal floor. Neglect any friction acting on the piano. Calculate the magnitude of the force applied by the man if he pushes parallel to the incline. Express your answer with the appropriate units. F1083 Submit X Incorrect; Try Again; 4 attempts remaining Part B Calculate the magnitude of the force applied by...
Constants Part A A man pushes on a piano with mass 170 kg ; it slides...
Constants Part A A man pushes on a piano with mass 170 kg ; it slides at constant velocity down a ramp that is inclined at 12.0° above the horizontal floor. Neglect any friction acting on the piano. Calculate the magnitude of the force applied by the man if he pushes parallel to the incline Express your answer with the appropriate units. ValueUnits F-1 Submit Request Answer Part B Calculate the magnitude of the force applied by the man if...
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Question 2 Constants Part A A man pushes on a piano with mass 160 kg; it...
Question 2 Constants Part A A man pushes on a piano with mass 160 kg; it slides at constant velocity down a ramp that is inclined at 16.0° above the horizontal floor. Neglect any friction acting on the piano. Calculate the magnitude of the force applied by the man if he pushes parallel to the incline Express your answer with the appropriate units. F-1 Value Units Submit Request Answer Part Calculate the magnitude of the force applied by the man...
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Part A Constants A man pushes on a piano with mass 170 kg ;it slides at constant velocity down a ramp that is inclined at 12.0° above the horizontal floor. Neglect any friction acting on the piano. Calculate the magnitude of the force applied by the man if he pushes parallel to the incline. Express your answer with the appropriate units. F1083 Submit X Incorrect; Try Again; 4 attempts remaining Part B Calculate the magnitude of the force applied by...
Constants Part A A man pushes on a piano with mass 170 kg ; it slides at constant velocity down a ramp that is inclined at 12.0° above the horizontal floor. Neglect any friction acting on the piano. Calculate the magnitude of the force applied by the man if he pushes parallel to the incline Express your answer with the appropriate units. ValueUnits F-1 Submit Request Answer Part B Calculate the magnitude of the force applied by the man if...
Question 2 Constants Part A A man pushes on a piano with mass 160 kg; it slides at constant velocity down a ramp that is inclined at 16.0° above the horizontal floor. Neglect any friction acting on the piano. Calculate the magnitude of the force applied by the man if he pushes parallel to the incline Express your answer with the appropriate units. F-1 Value Units Submit Request Answer Part Calculate the magnitude of the force applied by the man...
A horizontal force of magnitude 39.5 N pushes a block of mass 4.05 kg a distance of 3.00 m across a floor, where the coefficient of kinetic friction is 0.600. (a) How much work is done by that applied force on the block-floor system? (b) During that displacement, the thermal energy of the block increases by 44.0 J. What is the increase in thermal energy of the floor? (c) What is the increase in the kinetic energy of the block?
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