Question

A block of mass m lying at rest at point 'P' of a wedge having a smooth semicircular track of radius 'R'. What should be the minimum value of horizontal acceleration a₀ of wedge so that mass can just reach to point Q ?

• A. g/2
• B. $\sqrt { \mathrm { g } }$
• C. g
• D. None of these

Answer 1

Answer: (C)

g

Answer 2

$\overrightarrow { \mathrm { g } } _ { \mathrm { eff } }$ = $\infty )$ – $\overrightarrow { \mathrm { a } _ { 0 } }$ \ tan q = $\frac { \mathrm { a } _ { 0 } } { \mathrm {~g} }$

For block to reach point Q

q = 45⁰

a₀ = g