Advertisements
Advertisements
Question
A uniform circular motion is an accelerated motion. Justify it.
Advertisements
Solution
In uniform circular motion, a particle travels equal distances along the circular path in equal intervals of time, so the speed of particle is uniform. But the direction of motion of the particle changes at each point of circular path. Due to continuous change in direction of motion, the velocity of the particle is not uniform (or velocity is variable) i.e., the motion is accelerated.
APPEARS IN
RELATED QUESTIONS
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?

Explain briefly why the work done by a fielder when he takes a catch in a cricket match is negative.
Is work a scalar or a vector quantity?
When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
The work done by a force acting obliquely is given by the formula : W = F cos θ ✕ s. What will happen to the work done if angle θ between the direction of force and motion of the body is increased gradually? Will it increase, decrease or remain constant.
Why is the work done on an object moving with uniform circular motion zero?
The weights of two bodies are 2.0 N and 2.0 kgf respectively what is the mass of each body?
________ is said to be done when a force is acting on it.
