Wednesday
July 30, 2014

Homework Help: physics - forces

Posted by DJ on Thursday, October 8, 2009 at 6:56pm.

A person pushes a 16.0 kg lawn mower at constant speed with a force of 70.0 N directed along the handle, which is at an angle of = 45.0 to the horizontal. Calculate the force the person must exert on the lawn mower to accelerate it from rest to 1.2 m/s in 2.0 seconds (assuming the same retarding force which is 70cos45).

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