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Work & Kinetic Energy Help please!?

Work & Kinetic Energy Help please!? - Physics Forum

Work & Kinetic Energy Help please!? - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.


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Old 07-04-2009, 10:21 PM
Pipette Filler
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Default Work & Kinetic Energy Help please!?



A weightlifter raises 250 kg from the floor to a height of 2 meters.

a) How much work does he do if:
i) the object is raised straight up
ii) the object is first raised one meter straight up, then sideways 3.5 meters to the left followed by another meter straight up and finally 3.5 meters to the right

b) The mass is then released. What is the velocity of the mass when it hits the weightlifters toe?
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