Most Important Selected Qs for JEE AdvancedPhysicsLaws of Motion
The figure shows a block of mass m placed on a smooth wedge of mass M . Calculate the value of M^ and tension in the string, so that the block of mass m will move vertically downward with acceleration 10 ~m / s ^2 . (Take g =10 ~m / s ^2 )
Options
- Athe value of M^ is M 1-
- Bthe value of M^ M 1-
- Cthe value of tension in the string is Mg
- Dthe value of tension is Mg
Correct answer
C. the value of tension in the string is Mg
Step-by-step solution
aligned & M^ g-T=M^ a ..(i) & T=M a ..(ii) & M^ g=a (M+M^ ) & a= M^ g (M+M^ ) & m a =m g & a=g & g = M^ g (M+M^ ) & M+ M^ =M^ & M^ = M (1- ) & T=M a & =M g & T= M g aligned