TS EAMCET · Physics · Laws of Motion
A movable steel plate is placed between fixed steel and brass plates and the stack of plates is subjected to a weight of \(100 \mathrm{~N}\) as shown in the figure. The coefficient of kinetic friction for steel on steel is 0.57 and for steel on brass is 0.44 . Assuming that the entire weight comes onto the stack and that the weight of the plates is negligible in comparison to the applied weight, the force required to move the middle plate (in \(\mathrm{N}\) ) is
- A 13
- B 101
- C 440
- D 570
Answer & Solution
Correct Answer
(B) 101
Step-by-step Solution
Detailed explanation
For given figure, \(\mu_{S S}=\) coefficient of friction between steel and steel \(=0.57\) and \(\mu_{S B}=\) coefficient of friction between steel and brass \(=0.44\). \(\text { Free body diagram } \) where, \(f_{S S}=\) friction between steel plates and \(f_{S B}=\) friction…
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