1. A block is at rest on a horizontal frictional surface. A string is attached to the block, and is pulled with a force

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1 A Block Is At Rest On A Horizontal Frictional Surface A String Is Attached To The Block And Is Pulled With A Force 1 (39.25 KiB) Viewed 31 times

1. A block is at rest on a horizontal frictional surface. A string is attached to the block, and is pulled with a force of 65.4 N at an angle 0 above the horizontal. After the block is pulled through a distance of 1.35 m, its speed is 1.69 m/s, and 85.0 J of work has been done on it. a. Draw the Free Body Diagram for the problem. (3) b. What is the work done by normal force in this case? Explain. (2) c. Find the angle 0. (3) d. Find the mass of the block. (3) e. Let's say you are lifting this block in air instead of pulling it on the ground and then let go of it. How high will you have to lift this block to reach this same speed of 1.69 m/s moments before it touches the ground? (4) v=0 65.4 N 0 1.35 m Um 1.69 m/s