Most Important Selected Qs for JEE AdvancedPhysicsLaws of Motion
A point object of mass m is slipping down on a smooth hemispherical body of mass M and radius R . The point object is tied to a wall by an ideal string as shown. At a certain instant shown in figure, speed of the hemisphere is v and its acceleration is a . Then speed v_p and acceleration a_p of the point object is. (Assume all the surfaces in contact are frictionless).
Options
- Av_p=v 60^
- BV_P=V
- Ca_p=a
- Da_p= ( a 3 2 + v^2 R )^2+ ( a 2 )^2
Correct answer
D. a_p= ( a 3 2 + v^2 R )^2+ ( a 2 )^2
Step-by-step solution
x + R = constant d x d t + R d d t =0 = d d t = v R aligned & = d / dt = a / R & At =60^ , aligned v_p=v and a_p= ( a 3 2 + v^2 R )^2+ ( a 2 )^2