# physics

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A small boy is trying to open a 50 kg door with a height of 2 meters and a width of 75 centimeters. If he applies a force of 5 Newtons at the door handle (5 cm from the edge), how long will it take to open the door so that it's completely open (perpindicular to when it was closed)?

• physics -

torque= I * acceleration.

torque= .75*5
I= 1/3*50*.75^5

solve for acceleration.

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