What is the initial total mechanical energy of projectile

Reference no: EM1314695

Q1. A box with a mass of 8 kg is lifted (without acceleration) through a height of 9 m, in order to place it upon the shelf of the closet.

A. What is the increase in potential energy of the box?

B. How much work was required to lift the box to this position?

Q2. A 52.00 kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.26 x 10^2 m/s from the top of a cliff 126 m above level ground, where the ground is taken to be y = 0.

What is the initial total mechanical energy of projectile?

Reference no: EM1314695

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