An object moves without friction along a concave surface. What are the directions of the normal and tangential components of the acceleration at the lowest possible point ?

At the foot of a hill a certain velocity is imparted to a sled, as a result of which the sled moves up the hill to a point A and then down the hill. What are the directions of the normal and tangential components of the acceleration at point A ?

A particle is moving in a circle of radius R in such a way that at any instant the normal and tangential components of the acceleration are equal. If its speed at t = 0 is u_(0) the time taken to complete the first revolution is :

What is the direction of force of friction acting on a moving object ?

An object rotates about a fixed axis, and the angular position of a reference line on the object is given by theta=0.40e^(2t) , where theta is in radians and t is in seconds. Consider a point on the object that is 6.0 cm from the axis of rotation. At t = 0, what are the magnitudes of the point's (a) tangential component of acceleration and (b) radial component of acceleration?

A mass is revolving along a circle which ia in the plane of the paper. The direction of tangential acceleration is

Give an example when the direction of the acceleration of the moving object is opposite ot the direction of the motion .

For any particle moving with some velocity (vecv) & acceleration (veca) , tangential acceleration & normal acceleration are defined as follows. Tangential acceleration - The component of acceleration in the direction of velocity. Normal acceleration - The component of acceleration in the direction perpendicular to velocity. If at a given instant, velocity & acceleration of a particle are given by . vecc=4hati +3hatj vaca=10hati+15hatj+20hatk Find the tangential acceleration of the particle at the given instant :-

For any particle moving with some velocity (vecv) & acceleration (veca) , tangential acceleration & normal acceleration are defined as follows. Tangential acceleration - The component of acceleration in the direction of velocity. Normal acceleration - The component of acceleration in the direction perpendicular to velocity. If at a given instant, velocity & acceleration of a particle are given by . vecc=4hati +3hatj veca=10hati+15hatj+20hatk Find the normal acceleration of the particles at the given instant :-