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Evaluate the solution of the certain questions-

Question 1- A child on a merry-go-round takes 4.6s to go around once.

Part i- What is his angular displacement during a 1.0 s time interval?

Express your answer using two significant figures.

Question 2- A record rotates on a turntable at 33 rpm.

Part i- What is the angular speed in rad/s?

Express your answer using two significant figures.

Part ii- What is the period of the motion?

Express your answer to two significant figures and include the appropriate units.

Question 3- A professor's office door is 0.95m wide, 2.0m high and 4.0cm thick; has a mass of 25kg; and pivots on frictionless hinges. A "door closer" is attached to the door and the top of the door frame.

Part i- When the door is open and at rest, the door closer exerts a torque of 4.7N.m. What is the least force that you need to apply to the door to hold it open?

Express your answer using two significant figures.

I need experts help to compute the solution of the above question and Express the answer using two significant figures.

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  • Category:- Physics
  • Reference No.:- M91252673

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