Advertisements
Advertisements
प्रश्न
Give an example of motion in which speed remains uniform, but the velocity changes.
Advertisements
उत्तर
Direction of velocity in uniform circular motion
A particle travelling anticlockwise in a circular path with a constant speed v in a horizontal plane. The particle travels in the same amount of time (t = T/4) across each quarter of circles AB, BC, CD, and DA, where T is the particle's round-trip time on the circular path. Particle speed is therefore constant. However, at various places throughout the circular course, the particle's force direction of motion varies.
APPEARS IN
संबंधित प्रश्न
A particle rotates in U.C.M. with tangential velocity V along a horizontal circle of diameter ‘D' . Total angular displacement of the particle in time 't' is..........
Earth moves around the sun with uniform velocity.
A uniform metre rule of mass 100g is balanced on a fulcrum at mark 40cm by suspending an unknown mass m at the mark 20cm.
To which side the rule will tilt if the mass m is moved to the mark 10cm ?
Solve the following problem.
A projectile is thrown at an angle of 30° to the horizontal. What should be the range of initial velocity (u) so that its range will be between 40m and 50 m? Assume g = 10 m s-2.
If a particle moves with uniform speed then its tangential acceleration will be ______.
A string of length `l` is fixed at one end and carries a mass 'm' at the other end. The mass is revolving along a horizontal circle of radius 'r' making 'θ' as the semi-vertical angle of cone and `(1/pi)` revolutions per second around the vertical axis through fixed end. The tension in the string is ______.
A point object moves along an arc of a circle of radius 'R'. Its velocity depends upon the distance covered 'S' as V = `Ksqrt(S)` where 'K' is a constant. If 'e' is the angle between the total acceleration and tangential acceleration, then
A simple pendulum of length l has maximum angular displacement θ. The maximum kinetic energy of the bob of mass m is ______.
(g = acceleration due to gravity)
Why is uniform circular motion said to be accelerated?
In uniform circular motion, although the speed is constant, why does acceleration occur?
