A professor’s office door is 0.95 {rm m} wide, 2.0 {rm m} high, and 4.0 {rm cm} thick; has a mass of 25 {rm kg}; and pivots on frictionless…

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October 13, 2020
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A professor’s office door is 0.95 {rm m} wide, 2.0 {rm m} high, and 4.0 {rm cm} thick; has a mass of 25 {rm kg}; and pivots on frictionless hinges. A “door closer” is attached to the door and the top of the door frame.When the door is open and at rest, the door closer exerts a torque of 4.8 {rm N} cdot {rm m}. What is the least force that you need to apply to the door to hold it open?

A professor’s office door is 0.95 {rm m} wide, 2.0 {rm m} high, and 4.0 {rm cm} thick; has a mass of 25 {rm kg}; and pivots on frictionless…

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