A microwave oven of mass 10.0 k g is pushed a distance 8.00 m up the sloping sur

Question

A microwave oven of mass 10.0kg is pushed a distance 8.00m up the sloping surface of a loading ramp inclined at an angle of 35.3? above the horizontal, by a constant force F? with a magnitude 160N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is 0.200.





A microwave oven of mass 10.0kg is pushed a distance 8.00m up the sloping surface of a loading ramp inclined at an angle of 35.3? above the horizontal, by a constant force F? with a magnitude 160N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is 0.200.





A microwave oven of mass 10.0kg is pushed a distance 8.00m up the sloping surface of a loading ramp inclined at an angle of 35.3? above the horizontal, by a constant force F? with a magnitude 160N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is 0.200. A microwave oven of mass 10.0kg is pushed a distance 8.00m up the sloping surface of a loading ramp inclined at an angle of 35.3? above the horizontal, by a constant force F? with a magnitude 160N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is 0.200. A microwave oven of mass 10.0kg is pushed a distance 8.00m up the sloping surface of a loading ramp inclined at an angle of 35.3? above the horizontal, by a constant force F? with a magnitude 160N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is 0.200. A microwave oven of mass 10.0kg is pushed a distance 8.00m up the sloping surface of a loading ramp inclined at an angle of 35.3? above the horizontal, by a constant force F? with a magnitude 160N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is 0.200.



A microwave oven of mass 10.0kg is pushed a distance 8.00m up the sloping surface of a loading ramp inclined at an angle of 35.3? above the horizontal, by a constant force F? with a magnitude 160N and acting parallel to the ramp. The coefficient of kinetic friction between the oven and the ramp is 0.200.

Explanation / Answer

1)160*8 = 1280 J

2)10*9.8*0.2*cos35.3 * 8 = 127.97 J

3)10 * 9.8 * 8 * sin35.3 = 453.04 J

4) increase in KE = 1280 - 127.97 - 453.04 = 698.99 J

5) 160 / 10 - 9.8sin35.3 - .2*9.8*cos35.3 = a = 8.7373 m/s^2

6) V^2 = 2 * 8.7373 * 8

V = 11.823 m/s

7) 0.5 * 10 * 11.823^2 = 698.9166 J   

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