Biology Forums - Study Force

Two identical objects are released from rest from heights R and 2R above the surface of the Earth. After traveling a distance R/2, which object has the larger energy?
 
  1.Object a.
  2.Object b.
  3.Neither; they have the same energy.

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[Ques. 2] Two identical objects are released from rest from heights R and 2R above the surface of the Earth. After traveling a distance R/2, which object has the larger speed?
 
  1.Object a.
  2.Object b.
  3.Neither; they have the same speed.

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[Ques. 3]

An iceberg weighing 1,000 tons is floating in the North Atlantic. Consider the gravitational forces on the iceberg due to the Earth, the Moon, and the Sun. Put these gravitational forces in order of increasing magnitude.
   You do not need to do any calculations. Use reasoning, or simply guess.

  1.Earth < Moon < Sun
  2.Earth < Sun < Moon
  3.Moon < Sun < Earth
  4.Moon < Earth < Sun
  5.Sun < Moon < Earth
  6.Sun < Earth < Moon

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[Ques. 4] A ball is rolled up an incline so that it goes part-way up and then rolls back down. Which of the graphs below could represent its tangential component of acceleration vs. time, from the instant it is released until it returns to its starting point?
 

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[Ques. 5] A mass of 5 kg is released from rest on a smooth incline making an angle of 37 to the horizontal. The radial component of acceleration is closest to:
 

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Title: Two identical objects are released from rest from heights R and 2R above the surface of the Earth. ...
Post by: medes1 on Feb 23, 2018

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Title: Two identical objects are released from rest from heights R and 2R above the surface of the Earth. ...
Post by: roddyrodrod on Feb 23, 2018

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