Answer to Question #121934 in Mechanics | Relativity for jonell

Question

A warehouse worker pulls a cart a distance of 30.0 m across the floor using rope, the cart has a mass of 185 kg and starts at rest. the worker pulls on the rope with a force of 80.0 N, 30.0 degree above the horizontal. The force of tension from the rope will do ...... KJ of work of the cart as it travels the 30.0 m

Answer 1

The work will be

$$W=Td\text{ cos}\alpha=W=Fd\text{ cos}\alpha,\\ W=80\cdot30\text{ cos}30°=2080\text{ J, or 2.08 kJ}.$$