1.

A wedge (inclination `theta = 30^(@)` from horizontal) is moving with an acceleration `a = 4 m//s^(2)` vertically up as shown in figure. What is acceleration of block of mass 1 kg w.r.t & reaction by wedge on block respectively. All surface are smooth. Choose correct pair : `(g = 10 m//s^(2))` A. `7 m//s^(2),7 sqrt(3)N`B. `5 m//s^(2),5 sqrt(3)N`C. `4.9 m//s^(2),4.9 sqrt(3)N`D. `10 m//s^(2),10 sqrt(3)N`

Answer» Correct Answer - A
In the frame of wedge acceleration
`= (g+a) sin theta = 7 m//s_(2)`
Normal reaction `m(g +a) cos theta = 7 sqrt(3) N`.


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