CBSE Class 11 science: Motion in Two Dimensions Videos | Motion in a Plane

• The equation of a particle moving in an x-y plane is x=5t and y= 2t^2+t. Time after which it's velocity vector makes an angle 45 degree with the horizontal is
• My Doubt
  
• in a vertical circle of radius r at what point in its path a particle may have tension equal to zero
• clear my doubt
  
• clear my doubt
  
• Que: Equal and opposite charges cancel out eachother's effect then why doesn't centrifugal force cancel out centripetal force's effect on a particle moving in circular motion?
• a body is projected with speed 40root2 m/s downwards an angle of 45 degree from vertical if h=100 m find 1. time of flight 2. range
• Angular Displacement of a body is given by thete= 2t2+5t+3. Find angular velocity and angular acceleration  
• what is RPM.is it a unit of frequency or angular velocity. If a particle complete 1 revolution in 1 sec find both sec
• The position of a particle at any instant is given by . At what instant the velocity vector will make an angle 45^o with X-axis.

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