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Physics Questions about Newton's Laws?
1) A crate with a total mass of 50 kg is initially at rest on a level floor.
a) What is the magnitude of the upward force required to lift the crate with an acceleration of 1 m/s^2?
b) If the crate is being lifted at a constant velocity of 2 m/s, what is the magnitude of the upward force acting on the crate?
1 Answer
- TechnobuffLv 78 years agoFavorite Answer
a) Total acceleration = (g + 1) = 10.8m/sec^2.
Force = (ma) = 50 x 10.8 = 540N.
b) The only acceleration acting is g.
(50 x 9.8) = 490N.