A cart is pulled with a constant force F with a constant velocity v = 3m/s on a smooth horizontal ground. A hopper loads the cart with sands at a rate of 2 kg/s. (a) Explain why, even though there is a net external force on the cart, the cart experiences no acceleration and moves with constant velocity(b)Find the rate of loss of mechanical energy.

A cart is pulled with a constant force F with a constant velocity v =

1.	A cart is pulled with a constant force F with a constant velocity v = 3m/s on a smooth horizontal ground. A hopper loads the cart with sands at a rate of 2 kg/s. (a) Explain why, even though there is a net external force on the cart, the cart experiences no acceleration and moves with constant velocity(b)Find the rate of loss of mechanical energy.
Answer» A cart is pulled with a constant force F with a constant velocity v = 3m/s on a smooth horizontal ground. A hopper loads the cart with sands at a rate of 2 kg/s. (a) Explain why, even though there is a net external force on the cart, the cart experiences no acceleration and moves with constant velocity (b)Find the rate of loss of mechanical energy.

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