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March 28, 2015

March 28, 2015

Posted by **luc** on Tuesday, October 13, 2009 at 3:43am.

- physics -
**bobpursley**, Tuesday, October 13, 2009 at 8:24amFiguring the pushing force as horizontal and vertical forces is the first key. the horizontal component makes it move, the vertical force adds downward force increasing friction.

frictionforce=mu*forcenormal

= mu*(Weight+290sintheta)

Netforcemoving force=horizontalpushing-friction

= 290*cosTheta-mu(Weight-290sinTheta)

but you know acceleration= netpushingforce/mass

so solve for a.

Then

distance=1/2 a*t^2 solve for t.

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