Physics
A ball of mass 0.20 kg is thrown vertically upwards with an initial velocity of 20ms-1. Calculate the maximum potential energy it gains as it goes up.
Related Questions
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
(i) the body is at the top,
(ii) the body has fallen a distance x,
(iii) the body has reached the ground.
A pendulum is oscillating on either side of its rest position. Explain the energy changes that take place in the oscillating pendulum. How does the mechanical energy remain constant in it? Draw necessary diagram.
A stone of mass 500 g is thrown vertically upwards with a velocity of 15ms-1.
Calculate:
(a) the potential energy at the greatest height,
(b) the kinetic energy on reaching the ground
(c) the total energy at its half waypoint.
A metal ball of mass 2kg is allowed to fall freely from rest from a height of 5m above the ground.
- Taking g = 10ms-1, calculate:
- the potential energy possessed by the ball when it is initially at rest.
- the kinetic energy of the ball just before it hits the ground?
- What happens to the mechanical energy after the ball hits the ground and comes to rest?
- Taking g = 10ms-1, calculate: