Question

These problems maybe from Newton's Law, Motion, Vector, and Work and Energy, make sure to use the correct formula.  Round four decimal places throughout the entire problem and for the final answer for each problem.

1.A 10 kg object is being pulled at a CONSTANT velocity with force P which has 60 degree with the ground. Assume kinetic frictional coefficient is 0.23. Calculate the work done by P to move 10 m.

2.You are pulling a 10 kg object with a 90 N force which is in 60 degree with floor. How much work is done to remove 84 cm? Assume kinetic frictional coefficient = 0.50.

3.You are pulling a 20 kg object with a 181 N force which is in 60 degree with floor. How much work is done to remove 445 cm?

4.A 20.0 kg box is being pulled on a frictional surface with 206 N force which is oriented at 66 Degree with the ground. The work done to move 7 meter is 460 J. Assuming g=10m/s²,calculate ?_k?

Answer 1