A block of mass \( 10 \mathrm{~kg} \) is released on a fixed wedge inside a cart which is moved ...

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A block of mass \( 10 \mathrm{~kg} \) is released on a fixed wedge inside a cart which is moved with constant velocity
\( \mathrm{P} \) \( 10 \mathrm{~m} / \mathrm{s} \) towards right. Take initial velocity of block

W with respect to cart zero. Then work done by normal reaction of wedge on block in two second in ground frame will be: \( \left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}\right) \)
(1) zero
(2) \( 960 \mathrm{~J} \)
(3) \( 1200 \mathrm{~J} \)
(4) none of these
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