Physics

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In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp. negligible friction acts on the cart.
a) What force is required to pull the cart up the ramp at a constant velocity?
b) What force is required to pull the cart up the ramp at an acceleration of 2.2 m/s^2?

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