A mass M is initially at rest on a horizontal surface,
מקדם החיכוך הסטטי(ms) =0.30 and מקדם החיכוך הקיניטי(mk)=0.20 .
A horizontal string then pulls M with a tension T.
Forces below are magnitudes.
Correct /Incorrect : If M does not accelerate, then T £ msN
Correct /Incorrect : M will accelerate if T exceed msN
Correct /Incorrect : N equals Mg
Correct /Incorrect : M will accelerate if T exceeds mkN
Correct /Incorrect :The NET force on M (if M does not move) is mkN
Correct /Incorrect : T equals msN if M remains at rest
2006-12-09
00:04:30
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1 answers
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asked by
YoraM
1
in
Science & Mathematics
➔ Physics