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Standard XII

Physics

The 'e' Equation

What should b...

Question

What should be maximum value of $M$ so that the $4 k g$ block does not slip over the $5 k g$ bock-

12 k g

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8 k g

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10 k g

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6 k g

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Solution

The correct option is D $6 k g$
Maximum acceleration of 4 kg block will be decided by maximum frictional force acting on it = uN=0.4×40=16N
Max acceleration of 4 kg block = 4m/s $^{2}$
Thus max acceleration of 5 kg block should be 4 m/s $^{2}$

For 5 kg block T-f $_{s}$ =5a $\to$ T=36

For M kg block 10M-T=4M $\to$ m=6 kg

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What should be maximum value of M so that the 4 kg block does not slip over the 5 kg bock-

The correct option is D 6 kgMaximum acceleration of 4 kg block will be decided by maximum frictional force acting on it = uN=0.4×40=16NMax acceleration of 4 kg block = 4m/s2Thus max acceleration of 5 kg block should be 4 m/s2For 5 kg block T-fs=5a → T=36For M kg block 10M-T=4M → m=6 kg

What should be maximum value of $M$ so that the $4 k g$ block does not slip over the $5 k g$ bock-