E4.A 3.6-kg block being pulled across a table by a horizontal force of 60.6N also experiences an unknown frictional force. The acceleration is measured to be 13.1m/s2. What is the friction force on the block?
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Given Information:
The mass of the block (m) = 3.6 kg
The force acting on the block (F) = 60.6 N
The acceleration of the block (a) = 13.1 m/s2
let the "f" be the friction force acting on the block.
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- 2. A 1,480-N crate is being pushed across a level floor at a constant speed by a force F of 370 N at an angle of 20.0° below the horizontal, as shown in the figure a below. The floor has some amount of friction. 20.0° a a. Draw a free body diagram of all the forces on the crate. b. Write out one equation for the y component of the resultant force. Hint: The crate does not move in the y direction. Write out one equation for the x component of the resultant force. Hint: the crate moves in the x direction. C. d. Determine the Normal force. e. What is the coefficient of kinetic friction between the crate and the floor? (Enter vour answer to at least three decimal places.)E18. An upward force of 27.5 N is applied via a string to lift a ball with a mass of 2.5 kg. a. What is the net force acting upon the ball? b. What is the acceleration of the ball?a. Give an example of the motion of an object in which the frictional force on the object is directed opposite to the motion.b. Give an example of the motion of an object in which the frictional force on the object is in the same direction as the motion.
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