हिंदी

Complete a sentence and explain it. When an object is in uniform circular motion, its ______ changes at every point.

Advertisements
Advertisements

प्रश्न

Complete a sentence and explain it.

When an object is in uniform circular motion, its ______ changes at every point.

रिक्त स्थान भरें
Advertisements

उत्तर

When an object is in uniform circular motion, its velocity changes at every point.

Explanation:

In a uniform circular motion, the direction of motion of the body changes at every instant of time. This continuous change in the direction of motion of the body at every instant accounts for the change in its velocity at every point of instant.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Laws of Motion - Exercises [पृष्ठ १७]

APPEARS IN

बालभारती Science and Technology [English] Standard 9 Maharashtra State
अध्याय 1 Laws of Motion
Exercises | Q 4. c. | पृष्ठ १७

संबंधित प्रश्न

Draw a neat labelled diagram of conical pendulum. State the expression for its periodic time in terms of length.


For a particle performing uniform circular motion `vecv=vecomegaxxvecr`obtain an expression for linear acceleration of the particle performing non-uniform circular motion.


A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the net acceleration of the cyclist on the circular turn?


Explain the meaning of uniform circular motion. Give one example of such motion.


The motion of the moon around the earth in a circular path is an accelerated motion.


Which of the following quantity remains constant in a uniform circular motion?


Define angular velocity.


Solve the following problem.

A particle moves in a circle with a constant speed of 15 m/s. The radius of the circle is 2 m. Determine the centripetal acceleration of the particle.


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.


Which of the following graph represents uniform motion of a moving particle?


A particle is moving in uniform circular motion with speed 'V' and radius 'R'. The angular acceleration of the particle is ______.


A string of length 'l' fixed at one end carries a mass 'm' at the other end. The string makes `3/pi` revolutions/second around the vertical axis through the fixed end as shown in figure. The tension 'T' in the string is ______.


The given graph represents motion with ______ speed.


It is possible to have objects moving with uniform velocity but non-uniform acceleration.


Earth also moves in circular orbit around sun once every year with on orbital radius of 1.5 × 1011 m. What is the acceleration of earth (or any object on the surface of the earth) towards the centre of the sun? How does this acceleration compare with g = 9.8 m/s2?


A disc of radius 5 cm rolls on a horizontal surface with linear velocity v = 1`hat"i"` m/s and angular velocity 50 rad/s. Height of particle from ground on rim of disc which has velocity in vertical direction is ______ cm.


A wet open umbrella is held upright and is rotated about the handle at a uniform rate of 21 revolutions in 44 s. If the rim of the umbrella is a circle of 1 metre in diameter and the height of the rim above the floor is 1.5 m, the drops of water spun off the rim and hit the floor at a horizontal ______ m from the umbrella.


A ceiling fan rotates about its own axis with some angular velocity. When the fan is switched off the angular velocity becomes `(1/4)^"th"` of the original in time 't' and 'n' revolutions are made in that time. The number of revolutions made by the fan during the time interval between switch off and rest are ______. (Angular retardation is uniform)


A thin uniform circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and perpendicular to its plane with an angular velocity ω. Another disc of same dimensions, but of mass `1/4`M is placed gently on the first disc co-axially. The. angular velocity of the system is ______.


What is the direction of the velocity of an object at any point during uniform circular motion?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×