A mass M is initially at rest on a horizontal surface, ? s =0.30 and ? k =0.20 .

Question

A mass M is initially at rest on a horizontal surface, ?s=0.30 and ?k=0.20 . A horizontal string then pulls M with a tension T. N is the normal component of the contact force. All quantities below are magnitudes.

ture false If M does not accelerate, then T ? ?sN
True False  The total force on M is ?kN if M remains at rest.
True False  T equals ?kN if M remains at rest.
True False  The value of N equals Mg
True False  M will accelerate if T exceed ?sN
True False  M will accelerate if T exceeds ?kN

Explanation / Answer

True
False
False
True
True
False

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