Lv 148 points


Favorite Answers0%
  • Attachment image


    my answers: 

    1. 1.2m





    are they good?

    1 AnswerPhysics5 months ago
  • Attachment image


     A 37.4 kg beam is attached to a wall with a hinge and its far end is supported by a cable such that the angle between the beam and the cable is 90o. If the beam is inclined at an angle of theta = 27.9o with respect to horizontal, what is the magnitude of the horizontal component of the force exerted by the hinge on the beam?

    (Answer: 75.9N)

    1 AnswerPhysics10 months ago
  • Attachment image

    Mechanics problem: pendulum problem.. Please help ?

    I got the first answer right but not the last one, i'm confused. 

    Answer with explanation please.. 


    1 AnswerMathematics11 months ago
  • Attachment image

    Mechanics problem: momentum conservation ?

    I found the first answer to be 1.04 m/s which is correct. 

    Then, when I tried getting the 2nd answer I got the same result which isn't correct.

    Second answer with explanation please?

    1 AnswerPhysics11 months ago
  • Attachment image

    Mechanics prob: energy conservation with a swing pls help... ?

    My answer for the lowest point works. 

    But I'm having trouble doing the highest point one..? 

    Explanation with answer pls :/

    2 AnswersMathematics11 months ago
  • Attachment image

    Mechanics: Energy conservation problem with spring! Please help..?

    m1 = 1.6 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 45 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.2 kg that hangs vertically. The system starts from rest with the spring unextended.

    a) What is the maximum extension of the spring? (*Note: I have tried 0.7m but it doesn't work)

    b) What is the speed of block m2 when the extension is 65 cm?

    2 AnswersPhysics11 months ago