First slide

Work

Question

A block of mass m is released from rest at point A. The compression in spring (force constant k) when the speed of block is maximum is found to be $\frac{nmgcos θ}{4 k}$ . What should be the value of n?

Moderate

Solution

Speed of block will be maximum when
$mgcos θ = kx \Rightarrow x = \frac{mgcos θ}{K}$
Where x is compression. So n = 4

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