A photo frame with a mass of 2.8 kg is hung from a nail according to the opposite figure. If we know that the nail is located ex
actly in the middle of the string and the frame does not touch the wall, how many newton is the tensile strength of the string?
1 answer:
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use Newton's gravitational law and 2nd law .....
Answer:
Explanation:
At the bottom the tension would be upwards and the weight downwards, their difference being the centripetal force. Taking the upwards direction as positive we then have:
where we have used the equation for centripetal acceleration. Thus we have: