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प्रश्न
Is the motion of moon around the earth in circular path an accelerated motion?
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उत्तर
Yes, it is an accelerated motion.
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संबंधित प्रश्न
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
What is the work done by the moon when it revolves around the earth?
The S.I. unit of work is
Is work done a scalar or a vector physical quantity?
On what factors does the work done by a force depend?
Can every force produce work?
Name the physical quantity whose MKS units are kgm2s-3.
What do you understand by 'potential energy' and 'Kinetic energy'? Give three examples of each to illustrate your answer.
(i) A 200g ball is thrown vertically upward with an initial velocity of 30 ms-1. Draw a velocity-time graph for the motion of ball.
(ii) How long will the ball take to reach the highest point?
(iii) What will be the kinetic energy of ball, when it returns to the starting point, neglecting the air resistance?
(iv) What will be the potential energy of ball at highest point?
A force is applied on a body of mass 20 kg moving with a velocity of 40 ms−1. The body attains a velocity of 50 ms−1 in 2 seconds. Calculate the work done by the body.
