Advertisements
Advertisements
Question
Advertisements
Solution
Its kinetic energy changes with the change in velocity.
Velocity becomes zero at the highest point.
APPEARS IN
RELATED QUESTIONS
A body, when acted upon by a force of 10 kgf, moves to a distance 0.5 m in the direction of force. Find the work done by the force. Take 1 kgf = 10 N.
In which of the following cases, is work being done?
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.
How much work is done when a body of mass m is raised to a height h above the ground?
What happens to the work done when the dispacement of body is at right angles to the direction of force acting on it? Explain your answer.
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.
Complete the following sentences:
The SI unit of work is ....... and of power is .......
An object is dropped from a height H. when is its
(i) P.E. maximum,
(ii) K.E. maximum,
(iii) P.E. = K.E.?
How is horse power related to the S. I. unit of power?
