Three applied forces F1=20.0 N, F2= 40.0 N, and F3 = 10.0 N act on an object wit

Question

Three applied forces F1=20.0 N, F2= 40.0 N, and F3 = 10.0 N act on an object with a mass of 2.00 kg which can move along an inclined plane. The questions refere to the instant when the object has moved 0.600 m along the surface of the inclined plane in the upward direction. Neglect friction and use g= 10 m/s^2.

What is the amount of work done by the force f3 as the object moves up the inclined plane?

12 j

20.8 J

0 J

24.0 J

What is the amount of work done by the gravitational force as the object moves up the inclined plane?

6.00 J

-6.00 J

0 J

12.0 J

Please explain how you got the answer with work!

Explanation / Answer

W = FΔxcosθ

Plugging in known values :

= 10.0N(0.600m)cos30.0 °
= 5.2J

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